The Muscular System

1. The Muscular System Susan Levin 2011

2. What muscles are you using right now? Make a list

3. Exit Ticket What are the functions of the muscular system? Why do muscles work in pairs?

4. Science Words to know • Muscle • Voluntary muscle • Involuntary muscle • Skeletal muscle • Smooth muscle • Cardiac muscle • Tendon

5. What do muscles do? • Hold my organs in place • Hold my bones together so that I can move • Help me digest my food • Help me breathe • Open and close my eyelids • Pump my blood • Allow me to run and play • Help me to smile

6. Functions of the muscular system • Produce movement • Maintain Posture • Stabilize joints • Generate heat

7. Moving the human body • Muscle - an organ that contracts and gets shorter- this provides the force to move your body parts. • Muscles and bones work together, coordinated by the nervous system Muscles of the body

8. Parts of the muscular system • Muscles – over 600 • Tendons Tendons attach muscles to bone helping your body move. Feel your tendon right above your heel in the back of your leg. This is the thickest tendon in your body – Achilles tendon.

9. What are muscles made of? • Stretchy, elastic muscle cells • Made of proteins What else is stretchy like a muscle?

10. Muscle Control • Voluntary muscles - muscles that you are able to control Can you think of examples? • Involuntary Muscles - you can not move them consciously. They just keep working Can you think of examples? What muscles are both voluntary and involuntary? (I can think of 2)

11. Where to find information • Use textbook pg 51-53 Striated means striped. Notes: • Appearance, voluntary/involuntary, where found, when it tires, etc

12. Compare and Contrast • Use textbook page 51-53 • Use a WHOLE PAGE to make a Venn Diagram

13. Types of Muscles Types of muscles Muscles

14. Types of Muscles - Skeletal • Skeletal Muscles-muscles that move bones • Attached to bones by tendons • Most numerous in the body • Look striped or striated • Voluntary muscles • Tire easily • Quick to react

15. Types of Muscles - Smooth Muscles • Smooth muscles - non-striated • Involuntary • Move the internal organs • Contract and relax slowly • Example- small intestine, stomach, digestive system, bladder

16. Types of Muscles - Cardiac Muscle • Cardiac muscle - found only in the heart • Involuntary • Striations (stripes) • Contracts about 70 times a minute every day of your life. • Does not tire • Slow to react • Medmovie : heart anatomy … then anterior heartbeat

17. How Muscles Work • Skeletal muscles – work in pairs - when one muscle contracts- another muscle relaxes muscles work in pairs - bbc • Muscles always PULL - never push • Muscles use glucose and oxygen to make energy • Produce heat when they contract • Muscles that are not exercised become smaller Kidshealth.com

18. Muscles and Bones Work Together • Bones and muscles: the skeletal and muscular system United streaming 2 min Brainpop A review

19. One way to keep muscles strong… • Eat foods from the protein group every day. They are high in protein which helps to build strong muscles. • What kinds of foods are high in protein?

20. Exercise every day. What are some things you can do every day to help keep your muscular system healthy?

21. Learning “Write”: • If smooth muscles had to be consciously controlled what problems do you predict in day-to-day living? Write a story. • Write an article for the Courier about preventing skeletal and muscular injuries. Focus on ways the athletes can reduce the risk of injuries. Use textbook p. 46 - 49