1. By: Audrey Bryant, Caitlyn Mahoney, Tatum Register, and Milla Richter
The Muscular System
By:
Audrey Bryant, Caitlyn Mahoney, Tatum Register,
and Milla Richter

2. Objectives and Essential Question
Students will identify and/or describe the general function of the muscular system
Students will identify and/or describe how the muscular system of the human body interacts to maintain homeostasis
How does the muscular system help the body carry out life processes and maintain homeostasis?

3. Vocab
Homeostasis- The maintenance of a constant internal state in a changing environment
Muscle- The tissue that contracts and relaxes, making movement possible
Muscular System- A collection of muscles whose primary function is movement and flexibility

4. Function
The muscular system’s main function is movement. Most muscles work in pairs. For example the triceps and biceps work together to move your arm by contracting and relaxing. They also help you breathe and make your heart pump blood. In the body there are voluntary muscles and involuntary muscles. You can control voluntary muscles like your triceps, and cant with involuntary muscles like your heart.

5. Three Types Smooth- Cardiac- Skeletal-
The smooth muscles are found in internal organs and help move materials to the body.
Cardiac-
The cardiac muscles make up the heart and never get tired. This muscle pushes blood out of the heart and pumps it through the body.
Skeletal-
The skeletal muscles allow you to move. They are attached to the bones and contract and relax to move.

6. Homeostasis
Muscles maintain homeostasis by keeping it warm by twitching, or shivering. Also some of the muscles help with the flowing of blood and nutrients through the heart. In addition when you are in danger the muscles will send hormones to help you decide fight or flight. Which can save your life. Smooth muscles also help your digestive system. If you are digesting something your smooth muscles help. They also help you breathe

7. Disorders and Injuries
There are many ways the muscular system can malfunction. Some injures include:
Strains- this happens when you pull your muscle to far. The muscle swell and causes extreme pain. You must rest it to heal it.
But there are also disorders including but not limited to:
Muscular Dystrophy- a hereditary disease that weaken the skeletal muscles over time, making it hard to balance or move.

8. Exercise
Exercise helps keep your body healthy, but did you know that it helps your muscular system as well? Including:
Flexibility- when you stretch it improves how well your muscles can move without hurting yourself.
Muscle Endurance- endurance exercise helps your muscles work for long periods of time without getting tired. These exercises can also be known as aerobic exercises.
Muscle Strength- when you do resistant exercises it helps improve how strong your muscles are. Resistant exercises are where you do hard physical activity for shorts bursts of time.

9. Video
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10. Assessment Question #1
1.What is the main function of the muscular system?
The muscular system is made up of muscles that allow your body to move and be flexible.

11. Assessment Question #2
2.What is muscle tissue made of?
Muscle cells

12. Assessment Question #3
3.What are the 3 types of muscles, and which ones can you control and which ones can you not?
Smooth, Cardiac, and Skeletal; Controlled: Skeletal, Not Controlled: Cardiac and Smooth.

13. Assessment Question #4
4.What are the types of muscles that you can control and cannot control called?
Voluntary muscle and involuntary muscle

14. Assessment Question #5 5.What is the job of Smooth muscles?
Moves materials through the body

15. Assessment Question #6 6.What is the job of the Cardiac muscle?
Push blood out of the heart and pump it around the body

16. Assessment Question #7 7.What is the job of Skeletal muscle?
To help you move.

17. Assessment Question #8
8.What happens when a muscle contracts or shortens?
The attached bones are pulled closer together

18. Assessment Question #9
9.What are the muscle pairs, and how do they work together
Flexor and Extensor ; when one muscle contracts, the other one relaxes

19. Assessment Question #10 10.How can you improve muscle strength?
Resistance exercise

20. Assessment Question #13
13. What are some injuries and disorders of the muscular system?
Muscle strain and tears, Muscular dystrophy , Tendinitis

21. Assessment Question #12
12.How do muscles help the body maintain homeostasis?
By pumping blood through your body ,enable you to breathe, hold you upright , and allow you to move