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Unit 2 - Systems of the Body

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Sean Kasak

on 23 September 2016

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Transcript of Unit 2 - Systems of the Body

Involuntary Muscles
Function:
Control slow, involuntary movements of many organs.
Examples
Contraction of the walls of the stomach and intestines.
The muscle of the arteries contracts and relaxes to regulate the blood pressure and the flow of blood.
A
SPRAIN
is an injury to a ligament, the tough, fibrous tissue that connects bones to other bone. Ligament injuries involve a stretching or a tearing of this tissue.
A
STRAIN
is an injury to either a muscle or a tendon, the tissue that connects muscles to bones. Depending on the severity of the injury, a strain may be a simple overstretch of the muscle or tendon, or it can result in a partial or complete tear.

The small intestine is where
most of the digestion and absorption
take place, being that about ______% of those processes take place there.

The nutrients that have been digested are then absorbed through the
villi
along the walls of the small intestine and are passed to the bloodstream to be circulated around the body
Found in the circulatory system
Lining of the blood vessels
Helps in the circulation of the blood
Found in the digestive system
Esophagus, stomach, intestine
Controls digestion
Found in the respiratory system
Controls breathing
Found in the urinary system
Urinary bladder
Controls urination
Osteoporosis
Bones become weaker and more brittle, making them easier to break.
Women are 4 times more likely than men to develop osteoporosis
Causes:
Body not producing enough testosterone/estrogen
Not enough calcium in bones and/or from diet
Unhealthy lifestyle
Parts of the Skeletal System-
JOINTS
What is a joint?
A joint is a place where 2 or more bones meet.
QUESTION: Name the site of a few common joints on your body?
Examples: Elbow joints, ankle joints, knee joints, joints in your fingers and toes
Systems of
Osteoporosis
Multiple fractures of hand and wrist

(OUUUUCH!)
Comminuted fracture of the femur
Compound fracture of ulna and radius of arm (colored X-ray)
Depressed fracture of the skull
Spiral fracture of femur bone in leg.
Hairline Fracture
on Tibia bone in leg
Arthritis
Irritation of the joints
Common in the elderly.
Why causes it to happen?
Aging (getting older)
Overweight
Overwork from exercise/sports
Illness/Infection
Skeletal system complications
Ligaments
Tissues that connect
bones
to other
bones
.

Tendons
Tissues that attach
muscles
to
bones
.
What holds joints together?
LONG, SHORT, FLAT, OR IRREGULAR?
LONG, SHORT, FLAT, OR IRREGULAR?
LONG, SHORT, FLAT, OR IRREGULAR?
LONG, SHORT, FLAT, OR IRREGULAR?
LONG, SHORT, FLAT, OR IRREGULAR?
LONG, SHORT, FLAT, OR IRREGULAR?
LONG, SHORT, FLAT, OR IRREGULAR?
LONG, SHORT, FLAT, OR IRREGULAR?
LONG, SHORT, FLAT, OR IRREGULAR?
VOTE NOW!
Frequently Argued Question:
Types of Bones
Although the brain is a part of the nervous system, it's personal protector is a part of the skeletal system - the cranium. However, sometimes the skull can't fully protect us from a sudden direct blow or bump to the head. When this happens, we run the risk of getting a concussion.

The brain is made of soft tissue. It's cushioned by spinal fluid and encased in the protective shell of the skull. When you sustain a concussion, the impact can jolt your brain. Sometimes, it literally causes it to slosh around in your head. Traumatic brain injuries can cause bruising, damage to the blood vessels, and injury to the nerves.

The result? Your brain doesn't function normally. If you've suffered a concussion, your vision may be disturbed, you may lose your equilibrium, or you may fall unconscious. In short, your brain is confused.
What is a concussion?
Complete transverse (horizontal)
fracture of femur bone in leg.
Cartilage is a soft and flexible tissue that provides padding between many bones.
When we are newborns a lot of our skeletal system is made up of cartilage
Parts of the skeletal system –
CARTILAGE
LONG, SHORT, FLAT, OR IRREGULAR?
Flat bones
Thin and flattened bones
QUESTION: Based on the description above, what would be some examples of flat bones?
Examples:
Flat Bones
Typically longer than wide
Has heads at both ends of its long shaft
Question: What are some examples of long bones?
Examples:
Long Bones
What is a bone?
Organ of the skeletal system
Store minerals which makes them hard
Contain bone marrow on the insides
Bone marrow is the soft jelly-like substance inside bones that store fat and makes blood cells.
Parts of the Skeletal System- BONES
What if we didn’t have a skeleton?
No skeleton = No shape!









Peter Griffin from “Family Guy” as a huge blob after he makes a wish that he had no bones
Why do we have a skeletal system?
What makes up our skeletal system?
The Skeletal System
REMEMBER:
Tendons attach MUSCLES to BONE.
Tendons
REMEMBER:
Ligament attaches BONE to BONE.
Ligaments
Irregular (not-regular) shape
Do not fit into other bone categories
QUESTION: Name some irregular bones
Examples
Irregular Bones
Small and cube-shaped
QUESTION: What parts of your body do you think you have a high amount of short bones?
Examples:
Short Bones
How many bones do we have?
Infant
An infant can have more than 300 bones
As babies grow, many of their bones join or fuse together to make a stronger bone

Adult
When we reach adulthood and our bones are done growing, our skeletal system will have a total of 206 bones.
Fun facts about the skeletal system
The skeletal system has many different functions, including:
Gives the body support and shape
Protects organs
Allows us to move along with the help of our muscles
Stores minerals
Produces red blood cells and certain kinds of white blood cells
What does the skeletal system do for us? (It’s function)
Parts of the Skeletal System:
Bones
Joints
Cartilage
Christopher Reeve - From Superman
to quadriplegic - a tale of spinal cord injury
While competing in an equestrian contest on May 27, 1995, Reeve's horse stopped suddenly. Reeve was thrown forward, head-first over the horse and landed on the ground in a near-perpendicular position. The weight of Reeve's 6 ft., 4 inch, 230 lb. body shattered his top two vertebrae (cervical 1; C-1 and cervical 2; C-2) and severely damaged his spinal cord.

Magnetic resonance imaging (MRI) showed that Reeve had a severe injury at the C-2 level that left a central fluid-filled cyst surrounded by a narrow donut-shaped rim of white matter. This donut-shaped rim of tissue was the result of cells in the center of the spinal cord dying off because of the injury. This loss of cells prevents the spinal cord from functioning properly and interrupts the transmission of messages between the brain and the rest of the body.
MORAL OF THE STORY
Although Christopher Reeve's story is a tragic accident, it makes us think about the risky behaviors some of us do that can contribute to injury and disability. Be smart with what you do with your body, as some of the consequences can be devastating and irreversible.
Are teeth bones?
GLIDING JOINT
PIVOT JOINT
BALL AND SOCKET
HINGE JOINT
FACT OR FICTION:
"Cracking your knuckles causes you to get arthritis."
THE VERDICT...
FRACTURE - A BREAK IN A BONE
The Muscular System
A hernia is when an organ pushes through the muscle wall and creates a bulge under the skin
Can be very painful and limit movement
Typically happens because the muscle area is weak
Problems associated with the muscular system –
Hernia
1. Bend arm
- biceps  contract
- triceps  extend
2. Straighten arm
- biceps  extend
- triceps  contract
3. Bend knee
- quadriceps  extend
- hamstrings  contract
Try these Movements
Where are smooth muscles found?

Muscles that act when you tell them what to do.
Voluntary vs. Involuntary Muscles
TRIVIA!

Maintenance of
posture and
muscle tone
Functions
of the
Muscular
System
To strengthen muscles, your body needs daily, vigorous exercise.
Muscle fiber increases in size and strength when you exercise them more
Exercise and the Muscular System
4. Straighten knee
- quadriceps  contract
- hamstrings  extend
5. Crunches
- abdomen  contract
- back muscles  extend
Point toes
- calf muscle  contract
- shin muscle  extend
To create movement, one muscle
bends
the joint and the other muscle
straightens
the joint.
When a muscle is
contracting
the opposite muscle is
relaxing
.
Muscles work in pairs
Found ONLY in the heart
Involuntary
Function:
When the heart muscles contract it causes blood to pump throughout the body
Maintains your heartbeat
Healthy
cardiac muscle
does not fatigue.

Cardiac Muscle

Voluntary muscles
Function:
Create movement
by moving bones and joints
Maintain posture
and hold body in position
Create
heat
(much of our body temperature is produced by our muscles
Attached to skeleton by
tendons
Found all over our body and is the most common type of muscle
Ex: Biceps, triceps, quad, etc
Fatigue with excess use
Skeletal Muscle
Nearly half of body weight is muscle weight.
The 206 bones of the skeletal framework are covered by nearly 650 muscles.
Muscular system

Inflammation of the tendon caused by injury, overuse, or aging.
Problems associated with the muscular system –
Tendonitis
The 3 Types of Muscles

Smile and make someone happy.

Smiling is easier than frowning.
It takes 20 muscles to smile and over 40 to frown.
There are about 60 muscles in the face.
What is the LONGEST muscle in your
body, and where is it located?
TRIVIA
ANSWER:
The Sartorius
The Sartorius muscle runs from the pelvis and across the frontal thigh to the top of the tibia below the knee. It aids in flexion, abduction and lateral rotation of hip and flexion of the knee.
What is the
SMALLEST muscle,
and where is it located?
Answer:
The Stapedius
The stapedius is the smallest skeletal muscle in the human body. At just over one millimeter in length, its purpose is to stabilize the smallest bone in the body, the stapes.
Smooth Muscle
Gets rid of liquid wastes and other substances that the body doesn’t need.
The Excretory System
Large Intestine
Small Intestine




How does it work?
J-shaped muscular sac

Churns and grinds
together the food into smaller pieces.
Food is mixed with
gastric juices
that are secreted by the stomach walls.
Stomach
Components of the Digestive System
The Digestive System

Remove most of the wastes in your body
(your kidneys are the major excretory organs of your body)

Keep your blood purified by removing water, salts, and digested food particles in the form of urine

Organs of Excretion
KIDNEYS
Liver (yes, the liver again!)
-Part of digestive, circulatory and excretory systems.
-Helps get rid of
toxins
and
wastes
from the body
-
Breaks down the toxins
and wastes to be
secreted in the
urine
Organs of Excretion
LIVER
Excretes the waste product of respiration during exhalation.

Exhale Carbon Dioxide and Water Vapor.
Organs of Excretion
LUNGS
Your skin is your
largest external organ
Allows
water and salt
to go from the blood stream into the sweat glands.
Do you remember which digestive system organ removed these substances from your system?
Releases sweat from the sweat glands through the sweat ducts out to the skin pores.
Organs of Excretion
SKIN
Accessory Organs are organs that produce or store enzymes that helps in digestion.



3 main accessory organs:
Liver
Gallbladder
Pancreas
Accessory Organs

Biggest duty is
waste removal


Waste stays for ________ hours.

Larger width but shorter than small intestine (5 ft)

Absorbs
water and salts
from the food until it becomes solid
Large Intestine (colon)
Functions of the Digestive System
Waste is pushed into the expanded portion (rectum) of the large intestine.
Solid waste stays in the rectum until it is excreted through the anus as feces.
Large Intestine – Waste Removal
Esophagus
Mouth
Esophagus
Stomach
Small Intestine
Large Intestine
Accessory Organs
Gall bladder
Liver
Pancreas
A straight muscular tube that is

Takes
to pass the food to the
stomach

Its walls contain smooth muscles that contracts in wavy motion called

that moves food into the stomach
Blood vessels are hollow tubes of tissue that carry blood.
There are three main types of blood vessels:
Artery
Arteries are blood vessels that carry blood away from the heart
Vein
Veins are blood vessels that carry blood to the heart.
Capillaries
A capillary is a tiny blood vessel that carries blood from arteries to veins
Allow oxygen and nutrients from the blood to enter cells
Parts of the circulatory system - Blood Vessels
Atrium and ventricles
Transportation system of the body! What does it transport to the cells of our body?
Oxygen
Nutrients
from the digestive system
Hormones
(chemical substances your body releases to control things like growth, metabolism, etc)
Waste
from your body cells to excretory organs (like your liver or kidneys)
Body heat
Functions of the circulatory system
Really? It's true?
How much do you know?
About how many times does a persons heart beat in one day?
How much do you know?
About how long do red blood cells circulate in the body before they are disposed of and replaced?
The Circulatory System
6. Once the blood has filled up the left ventricle, the ventricle contracts and pumps the blood through the aorta and out to the rest of the body to supply oxygen filled blood
Path of blood
5. Oxygen rich blood returns from the lungs and fills up the left atrium waiting to enter the left ventricle after it has been emptied
Path of blood
3. The blood fills up the right ventricle
Path of blood
How much do you know?
How much do you know?
How long (on average) does it take for blood to circulate around the WHOLE body?
How much do you know?
There are four main red blood cell types: A, B, AB and O.

Each can be positive or negative for the Rh factor.

Bruise (also known as a contusion)
A type of relatively minor injury in which blood vessels are damaged by trauma (when something hits or strikes the blood vessels and breaks them).
Blood to seep into the surrounding extracellular space and creates the appearance we know as bruising.
Problems associated with the circulatory system – Bruising
Blockages in blood vessel
Arteriosclerosis - Condition in which an artery wall thickens as the result of a build-up of fatty materials such as cholesterol
Think of it like TRAFFIC on the blood vessel “roadway”
Common circulatory system problems/diseases
Heart attack - the interruption of blood supply to part of the heart, causing heart cells to die
Common circulatory system problems/diseases
4. The right ventricle contracts, pumping the blood through the pulmonary artery and into the lungs where the blood becomes oxygenated again
Path of blood
1. The oxygen-poor blood enters the heart that was circulating around the body through the vena cava

2. The vena cava leads blood into the right atrium, where it remains until it can enter the right ventricle when it is emptied
Path of blood
The Heart is a muscle (made up of cardiac muscle)
It’s about the size of your fist
Resting heart rate:
The number of times per minute your heart beats when your body is at rest
Typically on average it is anywhere between 60 -80 times per minute
The Heart
(HEADQUARTERS)
Think of it like a SHIPPING company:
Blood Vessels = ROADWAYS
Components of the circulatory system
How much do you know?
The circulatory system is the system of your body that carries materials through the body in the blood
What is the
circulatory system?
Blockages in blood vessel
Blood Clot – blood cells turn into a thick mass and block blood from flowing
Think of it like a ROAD BLOCK on the blood vessel “roadway”
Common circulatory system problems/diseases
ATRIUM and VENTRICLES
(Receiving and shipping parts of the company)
RIGHT
VENTRICLE
LEFT
VENTRICLE
The heart has 2 types of chambers – Atrium and Ventricles
The VENTRICLE (“vent-trickle) is like the SHIPPING part of the shipping company. It ships blood out to the BODY. They are on the BOTTOM.
Think of it like a SHIPPING company:
Blood = PACKAGES
Components of the circulatory system
Think of it like a SHIPPING company:
Heart = HEADQUARTERS
Components of the circulatory system
Main Components of
the circulatory system
If a person’s average heart rate is 70 beats per minute:
70 (someone’s average resting heart rate) * 60 (number of minutes in an hour)
=4200 beats per hour
4200 (beats per hour) * 24 (# of hours in a day)
100,800 beats per day
100,800 (beats per day) * 365 (days in a year)
36,792,000 beats per year!!!
LEFT ATRIUM
RIGHT ATRIUM
The heart has 2 types of chambers – Atrium and Ventricles
The ATRIUM (“Ay-Tree-Um”) is like the RECEIVING part of a shipping company – it receives blood returning from circulation
ATRIUM and VENTRICLES
(Receiving and shipping parts of the company)
TRIVIA
What color is the blood when it is inside our body?
ANSWER...
Your blood is....
RED
There has long been a misconception that our blood is blue on the inside of our body. Part of this because we talk about how we consider blood that is carrying oxygen to be "red blood", whereas we call blood that is oxygen poor to be "blue blood".

The truth is, the blood is red either way. Oxygenated blood is bright red, and de-oxygenated blood is more of a dark red. It does not magically change colors while flowing through our bodies, nor is the common response that "the blood turns red when it hits oxygen outside of our bodies" true either.
30 days
120 days
365 days
1000 days
Which blood type is considered the "universal recipient", meaning that the person with this blood type can receive a transfusion of any type of blood if needed?
Which blood type is considered the "universal donor", meaning that the person with this blood type have their blood donated to anyone, regardless of their blood type?
AB
O negative
Only 3 percent of people in the U.S. have AB-positive blood type. AB-positive type blood donors are universal donors of plasma, which is often used in emergencies, for newborns and for patients requiring massive transfusions.
FACT
Only 7 percent of people in the U.S. have O-negative blood type.

"In an emergency, type O negative red blood cells may be given to anyone — especially if the situation is life-threatening or the matching blood type is in short supply.

Ideally, blood transfusions are done with donated blood that's an exact match for type and Rh factor. Even then, small samples of the recipient's and donor's blood are mixed to check compatibility in a process known as crossmatching

But it's now known that even type O negative blood may have antibodies that cause serious reactions during a transfusion. And blood transfusions in general carry some risk of complications"
-Mayo Clinic
10,000 times
50,000 times
5,000 times
100,000 times
500,000 times
Do the Math!
That means your heart will beat over 1 billion times by the time you reach 28!!!!
Due to the heart having its own electrical impulse, it will continue to beat even when removed from the body as long as it has an adequate supply of oxygen.
FACT OR FICTION?
It has been said that the human heart can continue to beat even if it were removed from the body. There have been countless scenes like this in movies (Indiana Jones, Dumb & Dumber) where a scene like this happens. Is this possible or is it just a bunch of hollywood mumbo jumbo?
It's
FACT!
It's
FICTION!
Make your choice!
20 to 30 seconds
5 to 10 minutes
1 to 2 hours
24 - 48 hours
20 to 30 minutes
1 week
How many miles of
blood vessels are
in the average adult
human body?
ANSWER:
About 60,000 miles. Some studies have actually found numbers ranging all the way up to 100,000 miles! Either way,
it is more than enough to wrap around the world at least 2 times
if all of our blood vessels were laid end to end.
WHOA!
HEART
BLOOD
VESSELS
BLOOD
What's in the packages?
Oxygen
Wastes
Hormones
Nutrients
Body Heat
Sprains and Strains
What is the difference?
The common cold is a highly contagious viral infection of the upper respiratory system
Caused by the rhinovirus
The virus is spread from person to person by:
Sneezing
Coughing
Touching areas like the mouth, eyes, nose with infected hands
The common cold
Respiratory System Movie
The Respiratory System
Asthma is a disease of the airways that causes inflammation of the air passages
Results in a temporary narrowing of the airways that carry oxygen to the lungs and makes it hard to breathe
Affects 22 millions Americans each year
Asthma causes/triggers
Exposure to allergens
Pollen
Dust mites
Mold
Pets
Smoke
Air pollution
Genetics
Some people inherit a type of asthma
Other triggers
Exercise (Some individuals with asthma have Exercise Induced Asthma)
Infections (Sinusitis, Flu, Cold, etc)
Changes in the weather
Asthma
Pneumonia is inflammation of one or both lungs in which the air sacs (alveoli) become filled with liquid, which makes them unable to help with breathing
Caused by:
Viruses and bacteria
Parasites and small organisms
The Flu
Symptoms
Cough (might even cough up mucus)
Pain when breathing or coughing
Fever
Shortness of breath
Feeling tired or weak
Treatment
Antibiotics and other medicine
Lots of fluid and rest
If VERY BAD -> trip to hospital
Pneumonia
Sinusitis is inflammation of the tissues around the sinus
Caused by infection from bacteria
Can last up to 2 weeks
Symptoms
Headache
Pain/pressure in the sinus area
Toothache
Thick nasal discharge
Coughing
Fever
Treated by:
Rest, drinking fluids, and antibiotics
Sinusitis
Symptoms
Sneezing
Coughing
Runny nose
Sore throat
Headache
Fever
How long does it last?
Can last 1 to 3 weeks depending on how bad the cold is
How do you cure it?
No cure for the common cold
Best thing to do is to prevent it by washing hands regularly, getting rest, and taking medicine to feel better
The common cold
Upper respiratory system
The common cold
Sinusitis
Influenza (The Flu)
Pneumonia
Bronchitis
Asthma
Common respiratory
system problems
Lungs
The two sponge like organs that are in your ribcage
The lungs and the blood exchange oxygen and carbon dioxide
Blood carries the oxygen from lungs to the body’s cells
Lungs take the carbon dioxide out of the body in the form of breathing (exhale)
Parts of the
respiratory system
Epiglottis
Small flap of cartilage located at the base of the tounge that prevents food from going down into the trachea (windpipe)
Parts of the
respiratory system
Nose/Mouth
First place that air enters the body, where it is then guided to the trachea
Parts of the
respiratory system
Signs and symptoms
Wheezing
Chest tightness
Dry cough
Extreme difficulty breathing
Treatment
Many who have asthma need to have an asthma inhaler for when they have asthma attacks
Medications
Being aware of what the triggers are and careful planning to avoid those triggers
Asthma
Bronchitis is an inflammation of the linings of the bronchial tubes
Bronchial tubes swell and produce mucus
The mucus makes you cough
Lasts 2 to 4 weeks
Causes
Virus
Spread by coughing/sneezing
Skin contact with infection
Smoke
Breathing in chemicals
Pollution in air
Treatment
Antibiotics
Pain reliever
Cough medicine
Avoiding irritants (smoke, pollution)
Bronchitis
Influenza an extremely contagious respiratory illness caused by influenza A or B viruses
Signs and symptoms
High fever
Cough
Aches and pains
Fatigue/exhaustion
Difference between the flu and cold:
Flu is much more severe
-Symptoms are much more painful and disabling
Treatment
Lots of fluids
Rest
Medicines for fever and pain
Prevent the flu by getting flu shots yearly
Influenza (The Flu)
Main functions are:
Supply the blood in our body with oxygen
Oxygen delivered by blood
Get rid of carbon dioxide (CO2)
Use air coming out of our lungs to vibrate our vocal cords and create sound (speech)
Use the airflow through our nasal passages to experience the sense of smell.


Function of the
Respiratory System
Trachea
Pipe that carries the air from our mouth into our lungs
Trachea branches into 2 smaller tubes called bronchioles
At the end of the bronchioles are tiny air sacs called alveoli where the oxygen and carbon dioxide gas exchange takes place
Parts of the
respiratory system
DIAPHRAGM
Diaphragm
Smooth muscle stretched across the bottom of your lungs
Makes space in the ribcage for the air that you breathe in
Breathe in = diaphragm flexes
Breathe out = diaphragm relaxes
Parts of the
respiratory system
Being outside when it is cold
Being fatigued
The cold is
NOT

caused by:
Changes in weather or seasons
FLAT
FLAT
FLAT
LONG
FLAT
FLAT
LONG
IRREGULAR
LONG
LONG
SHORT
LONG
LONG
LONG
LONG
SHORT
LONG
SHORT
LONG
IIIIIIIIIIIIIIII
IIIIIIIIIIIIIIII
IIIIIIIIIIIIIIII
vertebrae
IRREGULAR
1. Name the four types of bones
2. What is the difference between a tendon and a ligament?
3. What is a joint?
4. What are three complications that can happen to our skeletal system?
5. Name the three types of muscles AND give an example of each (either the name or where you can find the type of muscle)
6. What does it mean when we say muscles work in pairs? (Either state the explanation or give an example as to how muslces work in pairs)
7. What digestive system organ does most of the digestion and absorption of food take place in?
8. What two items does the large intestine absorb out of food?
9. Name the three accessory organs, and state why they are called accessory organs.
10. What are the four excretory system organs we talked about?
GET OUT A SHEET OF PAPER!
(Our skull can only protect us from so much.)
This could be
YOU.
UNIT 2
the
BODY
Hinsdale Central
Health Education

THE CIRCULATORY SYSTEM
Movement
Heat Production
Protects the bones
and internal organs

Muscles that act on their own without you having to tell them what to do, and you cannot control them.
VOLUNTARY MUSCLES
INVOLUNTARY MUSCLES

Muscles not exercised will shrivel and become weak.
It takes only a
fraction
of the time it took you to
lose the muscle mass you've worked hard to gain.
WELL WHAT IF I DON'T WANNA?!?!
BREAKS DOWN FOOD
Filters out
harmful
substances
gets rid
of solid
waste
uses nutrients
for fuel
(kinda gross but kinda funny. Sorry.)
about 10 inches
4 to 8 seconds
peristalsis
Function:
The stomach helps
break down food and kills bacteria
on the food.
Small Intestine - POP QUIZ TIME!
How long is the average small intestine of an adult?
HOW LONG DOES FOOD SPEND IN THE SMALL INTESTINE?
20 - 23 feet
(1 inch diameter)
4 - 8 hours
90
FUNCTIONS
10 - 12
FOOD DOES NOT GO THROUGH THEM
remember when you were young and you did this and acted like you were breathing fire? yeah you did that. don't lie.
The nasal cavity, along with the mouth, are portals of entry for the air we breathe in.
The part inside your mouth where the passages of the nose connect to your mouth and throat
Also called the "windpipe", this tube transports the air from your pharynx to lungs.
The bronchioles or bronchioli are the passageways by which air passes the alveoli (air sacs) of the lungs
The bronchi are the
passages from the
trachea into the lungs, sending the air into the bronchioles of each lung
A tube shaped organ that contains the vocal cords; bands of muscle that vibrate when air passes by it and can create sound
A pair of spongy organs on both sides of the chest that fill with air and compress it out when we exhale; the primary organs of respiration.
O-positive: 38 percent
O-negative: 7 percent
A-positive: 34 percent
A-negative: 6 percent
B-positive: 9 percent
B-negative: 2 percent
AB-positive: 3 percent
AB-negative: 1 percent
"UNIVERSAL DONOR" but rarely used that way
Full transcript