Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Human body

No description
by

adib adib

on 9 July 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Human body

The Human Body is one of the most complicated things on Earth . Luckily , we have some people who know a lot about it like Doctors , Physicians and Scientist.

In this PowerPoint we'll be talking about the basics of the human body and 8 systems ( although there are 11 systems ) .
Introduction
Circulatory System
The
CIRCULATORY SYSTEM
consists of the
Heart
,
Artery,

Capillary
and
Vein
. Artery, Capillary and Vein are blood vessels, inside of them are
RED BLOOD CELLS
,which carry on oxygen and give it to the
CELLS
.

At first the red blood cells get pumped from the heart and then sends them to the artery which then they go to the capillary .The capillaries now release gases (because the other cells need
oxygen
so the red blood cells get gases from the other cells , and the other cells get oxygen) like
carbon dioxide
, which is why they get deoxygenated (another reason why they get deoxgenated is that they had given oxygen to every cells that they run out of oxygen , but it run out of oxygen when it's in the capillary) , which then go to the vein (which now is fulfill with carbon dioxide and other gases) and brings it to the heart it goes into the lungs and then gets oxygenated. We will talk about why they get oxygenated in our next topic the
RESPIRATORY SYSTEM
.
RESPIRATORY SYSTEM
The
Respiratory System
consists of the
trachea
,
lungs
, left and right
bronchus
,
bronchi
,
aveoli
. First , you breath in oxygen , the hair in your nose is called
nasal cavity
, the nasal cavity stops dust particles from entering your body , then the
oxygen
meets two paths , 1. trachea which is the pathway to the left and right bronchus and 2. esophagus which is a long tube for food entering the stomach , now you maybe wondering , if there is two paths then how does the food go to the esophagus , and oxygen is sent to the trachea , well there is a flap of skin called the
epiglottis
.

It prevents food from entering the trachea ( if it did you would eventually choke) . After , that the oxygen passed the trachea it meets the left and right bronchus , some of the oxygen goes to the left and bronchus , and some goes to the right bronchus , next the oxygen enters the lungs , there is the left and right lung , by now you should know that if oxygen passes to the right bronchus , oxygen would go to the right lung , and if left bronchus, then the left lung.

The oxygen goes to the bronchi then the oxygen travels to until it meets the bronchi , the bronchi passes it to the aveoli , now here is where the exchange happens . The aveoli meets some red blood cells (which is in the vein ) , so right now the
red blood cells
have
carbon dioxide
and the aveoli has oxygen , what happens is they switch , which means that aveoli has carbon dioxide and the red blood cells has oxygen , (well hopefully you know what the red blood cells do with the oxygen) , and well what do the aveoli do with it , well they can not keep it , so they send carbon dioxide directly to your nose .
DIGESTIVE SYSTEM
The
Digestive System
consists of the
mouth
,
salivary glands
,
esophagus
,
stomach
,
small intestine
, large
intestine
,
pancreas ,

liver
. First ,you chew the food , when you chew the food , the
salivary gland
release
saliva
, in the saliva there are chemicals called
enzymes
, enzymes make the chewing a lot easier and faster .

After , you have chewed the food it goes down a long tube called the
esophagus
, which sends the food to the stomach , the stomach releases
gastric juice
, which is an acid that does the digestion in the stomach , ( because the stomach can not do the digestion on it's own ) , now you might be wondering , if the gastric juice is an acid , it's going to eat up the stomach ( because gastric juice is a very strong acid ) , so how does the stomach survive from this acid , well there is a slime called mucus which prevents the gastric juice from eating the stomach . After , the pancreas sends enzymes collects the nutrients ( you might be wondering in the saliva , then why did not the enzymes that are released from the salivary glands collect the nutrients ) , because the enzymes that are from the salivary glands are called enzymes , but the ones released from the pancreas are called
digestion enzymes
.

Anyway , the food is turned to
chyme
( liquid food ) after all the the fats ( lipids ) by the
biles
and passed to the liver , there are still nutrients in the in the food , so the food goes to the small intestine , where there's small things called villi which are located in your small intestine , so you might be wondering how does the villi collect the nutrients , well the
villi
they collect the nutrients when the food passes by them , so after all the nutrients are absorbed , the wastes ( the things that your body does not need ) , in the scientific way to say wastes is
feces
another word for poo, the feces go around the large intestine ( the far it goes from the small intestine the more wastes are added ) , it stops wondering when the feces meet the rectum ( the rectum is just a storage for feces ) when the
rectum
get's filled up the
anus
releases the feces ( the anus is just the finishing touch of the digestive system ) .
INTEGUMENTARY SYSTEM
The
Integumentary system
is made of the
skin
. The skin has two layers - the
epidermis
and
dermis
. The epidermis contains several layers and is the upper part of the skin , and the dermis is the lower part , it contains
blood vessels
. Under skin , is
sweat gland
,
hair follicile
and
sebaceous glands
. The hair follicile is a small pocket in your skin where the hair grows in your skin . The sweat gland produces sweat to cool you down , and the sebaceous glands release an oily substance called
sebum
, that softens hair , but wait , there are some other stuffs in your skin too .

Like we talked about the
arteries
,
capillaries
,
veins
in the
circulatory system
, the arteries supply
oxygen
( in this case to the skin cells ) , and the
deoxygenated
red blood cells in veins come back to the
heart
with wastes ( from the skin cells ) . The
receptors
are detectors , they detect whether the skin feels cold , pain or heat , these receptors are connected to the
nerves
, the nerves send this message to the brain , or sometimes
reflex
actions take place ( which I will be talking about that in the
nervous system
) . Then there's this tiny muscle which pulls when it's cold , because when your body's cold it needs heat so when the tiny muscle pulls ( your tiny muscle does this by your brain signaling it to ) , your hair sticks out to trap warm air and keep heat from escaping .

So , now you know what now what happens if it is cold or hot , but let's say that there was a sunlight at the direction at your skin , and your skin was the way I was talking about you'd lose numerous of skin cells , luckily your skin contains a specialized cells called
melanocytes
, these cells produce
melanin
a substance that passes through the epidermis cells , after the melanocytes have created a screen of melanin , they prevent ultraviolet rays from entering and damaging skin cells . Also , there's a fat layer that your body store and helps keep you warm and it is called
hypodermis
Muscular System
The
Muscular System
is made up of
muscles
. Muscles can function two ways
involuntary
and
voluntary
. The muscles that function in an voluntary way ( voluntary just means that you are doing it what to do ) your voluntary muscles . The involuntary muscles are you having to not tell what to do .

There are 3 muscle types 1.
Skeletal muscles
an involuntary muscle and are muscles that are linked to your
bones
by your
tendons
2.
Heart muscle
( Cardiac muscle ) is a nonstop

muscle (then of course it is a involuntary muscle ) this muscle that is located to your heart 3.
Smooth muscles
are long muscle cells linked together in muscular sheets , smooth are your stomach .
Skeletal System
The
Skeletal System
is made of the
bones
.

Bones are made of
calcium
, when two bones or more meet it is called a
joint
there are many types of joint , you have the ball and socket joint , saddle joint , plane joint and hinge joint . The bones can not attach them together so
ligaments
are straps the hold your bones together . If your bones move , they will eventually will grind , luckily
cartilage
is a substance that is smooth and prevents bones from rubbing each other .

Joints can work in two ways ,
immovable joints
and
movable joints
. Immovable joints are joints that can not move and movable joints are joints that can move .
NERVOUS SYSTEM
The
nervous system
consists of the
brain
,
spinal cord
,
nerves
. The nervous system is divided into two systems ,
central nervous system
and the
peripheral nervous system
. The central nervous system consists of the brain and spinal cord , and the peripheral nervous system consists of the nerves . The brain is your control center , it can do many functions , it is divided into three parts the
cerebrum
,
cerebellum
and the
medulla
( brain stem ) , the cerebrum does voluntary actions like sensing , thinking and imagination , the cerebellum does voluntary actions too like motion , balance and learning new things , and the medulla does involuntary actions ( in your body ) like automatic actions , etc.

Now you maybe wondering , if we wondering have a brain then why do we need
nerves
, well here's why , let's say your book is on the stove you went to get but accidentally put your whole hand went on top of it , if don't have nerves your skin would burn while your standing , luckily you have nerves . Well , then how do nerves function when your brain receives the message from nerves called
sensory nerves
, and your brain sends the message back by nerves called
motor nerves
, for example I was about to touch a bowl of hot soup and as soon as I touched , my sensory nerves took the message that it's hot and the brain get's the message and sends back the message by

motor nerves .

Well , you mentioned something about
spinal cord,
why do we need it , we need the spinal cord cause it's a shortcut and a highway , there's something called
reflex action
, this action has to happen immediately , for example if touched a candle , your sensory nerves take the message directly to your spinal cord and that takes it to the brain and the brain gives a signal to the motor nerves telling you to get your hand off of the candle .
Excretory System
The
Excretory System
consisting of the
kidneys
,
ureter
,
bladder
, and the
urethra
. The
kidneys
are like a filter for your body , it filters your blood and takes the waste out .
Nephrons
are inside your kidney and make up most of your kidney , they also convert blood that needs to be filtered , here they get the bad particles in the blood and make convert it it urine , also it keeps the
blood
that does not have bad particles .

Next ,
urine
is passed to the ureter a long pipe to the bladder ( a storage ) and when it's full your brain stem ( medulla ) tells the bladder to release , the urethra releases urine .
HUMAN BODY
OAKRIDGE JUNIOR PUBLIC SCHOOL
IN GRADE 5
MADE BY ADIB
Full transcript