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THE MUSCULAR SYSTEM

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james cosby

on 12 May 2015

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Transcript of THE MUSCULAR SYSTEM

Steps involved in movement
of muscle or bone
First, cells that make muscles contract and then relax the muscle. Tiny fibers in cells slide past each other. Cells use energy from the food you eat so, if you don't eat food then your muscles will not be able to contract.
THE MUSCULAR SYSTEM
Organs in the muscular system and homeostasis
How the muscular system interacts with the skeletal system
Function of the smooth muscle
Found only in the heart
Its Involuntary
Works automatically
Forms walls of the heart
Does not get tired
Hardest working muscle
Has high endurance
Smooth Muscle
Common diseases
Its found in the esophagus, stomach and in the walls of the blood vessels
Its involuntary which means we don't have control over it
Some people learn how to control their smooth muscle
Contracts slowly & automatically
To make sure you don't pull or strain a muscle the best thing is to have plenty of water, rest, and a healthy diet.
Milk gives calcium, rest helps you prevent your muscles from being over used, and meat supplies cell growth and the production of other cells.
Muscular system
This gives you the ability to move, it is an essential part of your body
This system contains over 600 types of muscles
3 purposes
body movement
body shape
body temperature
Body movement rely's on three type of muscles
Smooth(Involuntary
Cardiac
Skeletal(Voluntary)
It is impossible to stop moving, even when you standing still you are moving. Some muscles are not under control completely. These are called involuntary muscles. These muscles are responsible for breathing and digesting food.
There are 3 different types of muscles:
Smooth muscles:helps digest food, are not striated, organs, stomach, and blood vessels contain smooth muscle, and react and tire slower.
Cardiac muscles:only found in the heart, and they have some characteristics related to the smooth muscle, but it doesn't get tired.
Skeletal muscle: Helps power the body's movement when you walk or lift things.
The tendon is a strong tissue that
connects your muscle to your bone.
Your muscles react quickly and they tire
quickly. Smooth muscles react and tire slower
and it helps contract in hollow organs and blood vessels.
Common diseases:
muscular dystrophy
ALS
ALS causes your body to not move,and your not able to speak. Today I will focus on muscular systrophy


Skeletal System
This is all of the bones in our body and the tendons, ligaments and cartilage that connects them
The adult human body has a constant amount of 206 bones
This system performs many functions like: the skeleton supports the body, protects internal organs, provides for moment, and provides a site for blood cell formation
The strongest and biggest bone is the femur. It is extremely important
How they work together
This occurs when there is movement in the body. This happens when they interact with each other
Muscular Dystrophy
The primary function is to create movement.
Prevention:
Some forms of muscular
dystrophy can be prevented.
For example, Polio Syndrome (a condition of muscle weakness) can be prevented by vaccinating children against Polio. People can also learn about what medications/toxins that may lead to damage of nerves to avoid these.
Early Detection:

The 2 boys were significantly developmentally delayed when compared with a control group. Development delay was most pronounced in loco meter, function, and language.
They create levers in the body
Symptoms and Treatments:
The first historical account of muscular dystrophy was in 1830. 6 weeks later 2 teen brothers developed weakness, muscle damage, and replacement of damaged muscle tissue with fat, and connective tissue. Later, in 1850 they couldn't walk and ended up dying. As I said before there are some vaccines you can take and/or learn about what medications/toxins may lead to damage of nerves to avoid these.
Depending on the location of the load in relation to the joint, muscles or bones create either a mechanical advantage or disadvantage when you lift an object.
Muscular Dystrophy is a disease that causes your muscles to become weaker. A release of chemical acetylene triggers a series of events that cause the muscle to contract. This muscle fiber prevents damage as the fibers contract and relax. When this membrane is damaged, fibers begin to leak the protein called Kinase.
What Is homeostasis
Cardiac Muscle
Skeletal Muscle
Smooth muscle controls slow, involuntary movements such as the contraction of the smooth muscle tissue in 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.
How the cardiac muscle works
Cardiac muscle tissue is an extremely specialized form of muscle tissue that has evolved to pump blood throughout the body
It causes a rhythmical beating of the heart.
Attached to bones by
Provides force to move your bones
Has strong connective tissue that attaches muscle to the bone called the tendon
Reacts very quickly
Where they come together
The point of where they meet,or where the muscles and the bones connect, is known as a joint
Tendons are a form of connective tissue that actually connects muscle to bone.
When movement occurs at any given joint, only one of the articulating bones will move.
How they help us
They both help us in every movement we take.
We couldn't attend any activity without these two systems.
The Musculoskeletal system System
Without the skeletal system, the human body would not be able to support itself
Without the muscles, the skeletal system wouldn't be able to move
The elements of the skeletal system allows the bones and muscles to move freely and fluidly together
Why do these systems need to work together?
The body would not function properly
You need them to be able to do almost anything
For example to be able to throw a pitch in baseball, you need these systems to work together to meet at the joints of your body.
What would happen if you injured one of the systems?
Imbalance and injury are both connected in the skeletal and muscular system.
When their is an injury, their is an immediate affect on both of them
Weakness or imbalance can cause strain or injury to the connective tissue
This does lots of damage to the bone
How to take care of the systems
1. Have a healthy diet
2. get plenty of exercise
3. Get plenty of sleep

Having a healthy diet will need proteins, minerals, and vitamins needed
Exercise is needed to help muscels grow and develop
Rests gets rid of your wasts in your body
Rest also prevents muscels from being over used
Responsibilities
Connection:
The functions of the system
The Muscle and skeleton function
The muscular system, allows us to move and make facial expressions. It gives us the strength to push and pull on things. It helps us digest our food. It also sends information to the nervous system, allowing the body to keep posture.
Your biceps and triceps are a good example of skeletal muscle because their connected to the arm bone by a tendon. There are many skeletal muscles all around your body

The skeleton is covered with muscles, that helps us move and maintain posture.
Major muscles
- Abdominal
- Biceps
- Deltoids
- Hamstrings
- Quadriceps
- Pectoralis
A band of connective tissue (protects and supports organs and other tissues).

They connect skeletal muscles to bones.
Tendons will pull on the bones, making them move.
Examples of muscles and their functions
1) Tendons
2)


The biceps
They help control the motion of two different joints, the shoulder and the elbow.
3) Hamstrings
The hamstrings cross and act upon two joints, the hip and the knee. The hamstrings also help rotate your lower leg.
The main function of the hamstrings is to bend your knees. This movement is performed during daily activities such as walking, running, jumping.
Hamstring
4) Triceps
The triceps are a major muscle of the upper arm in the human body.
They help you bend and straighten your arm.
Biceps and Triceps
5) Pectorals
Homeostasis comes from Greek. Homeo which means "similar" and stasis means "standing still". Homeostasis is the process in which the body is able to a state of stable physiological balance or maintain equilibrium.
6) Deltoids
Facts about the muscular system
1) Muscles make up 40% of your body.
2) The smallest muscles are found in the ear.

3) To take one step, you use 200 muscles.
4) The tongue is the strongest muscle in your body.
5) It takes 17 muscles to smile.
6) It takes 43 muscles to frown
Examples of Involuntary muscles:
-stomach
-heart
-digestive system
Involuntary and voluntary muscles
Examples of homeostasis in the muscular system
Examples of voluntary muscles:
-arm muscles
-leg muscles
-face muscles
When do we need these bones to work together?
We need these bones to work together for almost everything we do. It is humanly impossible to attend activities or even just any movement without these systems not cooperating every second of the day.
When you sleep, it rests these systems. Then it makes a person very active for the next day. You need sleep or else it may affect you in everything you do the next day.
These to systems are very importamt factors in the human body, so you need to do everything you can to keep them as healthy as possible
An example of homeostasis of in the muscular system is when you are cold, you start to shiver. Your muscles generate heat. Because the muscles generate heat, this ceases the shivering when they provide heat. This is homeostasis in the skeletal muscles. Your body must maintain the average temperature (37°) and when your body shivers it is because your body has dropped below that temperature.
Another example is when your body has too much heat, you begin to sweat, and
this sweat cools the body down back to 37° therefore maintaining homeostasis and
balancing out the body’s temperature.
Another Example
10 misconceptions about sweating

1) People sweat the most in the armpits
2) Sweating is natural and always good
3) The body rids itself of toxins by sweating
4) Men and women sweat to the same degree
5) Sweat has an unpleasant smell
6) Sweating reduces body weight
7) Sweat glands are the same in all people
8) Overweight people sweat more
9) People do not sweat in winter
10) People who sweat faster are not in shape
The biceps are attached to the arm bones by connective tissues called tendons.
Example: The tendons that connect the biceps muscle to the shoulder joint are called the proximal biceps tendons.
When the triceps are tensed, the forearm extends and the elbow straightens.

When the triceps are relaxed and the biceps tensed, the forearm retracts and the elbow bends.
The pectorals control the movement of the arm. They pull on the humerus to create lateral, vertical, or rotational motion.
They also pull the ribcage to create room for the lungs to expand, in order for us to breathe in.
The deltoids are named after the fourth letter of the Greek alphabet,
due to the similar shape they both share.
The deltoids are located on the outside of the shoulder.
Its main function is to protect the humerus from injuries when carrying heavy loads.
It also helps rotate the arm.
Joints:
several tissues work together to build the joints in your body
Bone:
Provide an attachment point for muscles
Muscle:
contract to pull bone
Tendons:
attach muscle to bone
Ligaments:
attach bones
Fluid sac:
cushions the joint
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