1. Warm Up Study for Skeletal System Quiz (SILENTLY)
5 Functions of the Skeletal System
Types of Joints (how they move, where they are)
Layers of Bone
Axial Skeleton
Appendicular Skeleton

2. Quiz
12 Minutes to complete
When finished, read silently

3. Muscular System

4. Muscular System
You have over 600 muscles in your body!

6. Vocabulary
Muscle: An organ made of muscle tissue, which moves a particular bone, part, or substance of the body
Contract: to make smaller, decrease. When you flex a muscle you are contracting it.
Expand: to make larger, increase. When you relax a muscle you are expanding it
Homeostasis: a condition needed for good health in which an organisms keeps a relatively stable internal environment
Peristalsis: the wavelike contraction of stomach muscles which help to churn up food

7. Muscular System Functions
Movement
Maintaining Body Temperature
Posture

8. Movement Muscles are connected to bones by tendons
Muscles provide the pull that bones need to move
Muscles contract, cause movement at joints

9. Maintaining Body Temperature
Normal Human Body temp = 98.6F
It stays this way because of your muscles
*When muscles contract, they release heat
Shiver = quick muscle
contractions to warm you up

10. Posture
Muscle constantly contract and relax or make small changes to hold you up right
The muscles of the body also make joints strong

11. 3 Types of Muscles 1.Skeletal Muscle
Attached to your bones

13. 2. Smooth Muscles
Inside some organs like the stomach

14. 3. Cardiac Muscle
Your heart

17. Types of Muscles Voluntary: Controlled directly by your thoughts
Skeletal Muscle: muscle attached to bones by tendons
Involuntary: Move without you thinking about it
Smooth Muscle: muscles of internal organs (stomach)
Cardiac Muscle: muscle that makes up your heart

18. Voluntary & Involuntary Muscle Lab
Worksheet pg. 28
Work with person sitting next to you
Instead of mirror, you have a partner

19. Muscular System Packet
Begin Work to Complete Packet

20. How do muscles grow?
27B

21. Exit Ticket – no notes Your stomach is made of
Cardiac Muscle
Skeletal Muscle
Smooth Muscle
Voluntary Muscle
Which is not a function of the muscular system?
Posture
Movement
Protection
Maintaining Body Temperature.
3. What is the difference between Voluntary and Involuntary Muscle?

22. Warm Up
*Put last night’s homework on desk to be graded (39 and 40 of packet)
Answer on notebook paper to turn in. You do not have to write questions.
Why do you think it is important that the heart is an involuntary muscle?
2. Why do you think it is important that the muscles in our legs are voluntary muscles?

23. Yesterday’s Exit Your stomach is made of
Cardiac Muscle
Skeletal Muscle
Smooth Muscle
Voluntary Muscle
Which is not a function of the muscular system?
Posture
Movement
Protection
Maintaining Body Temperature.
3. What is the difference between Voluntary and Involuntary Muscle?
Voluntary = you control and decide when it moves
Involuntary = Automatic, your body does it without you telling it to

24. Video Review

25. Muscles of Digestion Chewing Food = Voluntary
Swallowing Food = Voluntary
Food Traveling Through Intestines = Involuntary
Peristalsis = Involuntary
So is digestion voluntary, involuntary or both?
BOTH

26. Today’s Agenda 1. Finish Packet Started Yesterday
2. Read 27B in textbook. Explain why exercise helps muscles get bigger.
3. Complete Types of Muscle Charts (use 25B for help)
4. “How Many Muscles Does it Take to Smile?” Article
5. “Your Bones and Muscles” Article

27. Exit
The muscular system is made of both Voluntary and Involuntary muscles, which type aid in digestion?
Both
Neither
Voluntary
Involuntary
2. When you are cold, your body shivers. Explain how this is an example of a function of the Muscular System.

28. Warm Up – put packet on desk
Where in your body do you have cardiac muscles?
True or False – shivering is an example of your muscles performing one of their main functions
Why are skeletal muscles considered voluntary muscles?

29. Warm Up Review Where in your body do you have cardiac muscles?
Heart. The word cardiac means heart!
2. True or False – shivering is an example of your muscles performing one of their main functions
True. One function of the muscular system is maintaining body temperature. When you’re cold your body shivers to try to warm you up
3. Why are skeletal muscles considered voluntary muscles?
They are considered voluntary because you must tell them to move, they do not move automatically

30. Quiz Return 6. Ball and Socket 7. Immovable, Skull
Blood Cells
Protect, Skull, ribs and spine
Outside layer
Protection, movement, support, mineral storage, blood cell production
Protect = keep insides safe
Movement = help body move
Support = hold you up
Blood cell production = bone marrow makes blood
Mineral storage = calcium is stored in bones
6. Ball and Socket
7. Immovable, Skull
8. Both are made of bones but axial protects and Appendicular helps you move
9. Sliding or gliding
10. Ball and socket

31. Packet Review Correct wrong answers! 3 functions of muscular system
Movement
Maintaining Body Temperature
Posture
Video review

32. Agenda *Types of Muscle Charts (use 25B for help)
Level of Conscious Control = voluntary or involuntary
2. “How Many Muscles Does it Take to Smile?” Article
3. Flash Cards for CFA 4
4. Magic School Bus 

34. *Types of Muscle Charts (use 25B for help)
Level of Conscious Control = voluntary or involuntary
2. “How Many Muscles Does it Take to Smile?” Article
3. Your bones and muscles article
3. Flash Cards for CFA 4