1. Muscle Cells and Tissue

2. Time for a Movie
Discovery Channel Pushing the Limits: Muscle Fibers 10:39: Describe skeletal muscle fibers (muscle cells). 11:21 How many skeletal muscle fibers do we normally use at any one time? 12:19 What body structure is needed to trigger our skeletal muscle fibers? 13:15 When is the only time we can trigger all of our skeletal muscle fibers at once? 13:40 What is the cost of using all of our skeletal muscles at once?

3. Learning Target: Compare skeletal, smooth, and cardiac muscle cells and tissue.
Involuntary Voluntary

4. Learning Target: Compare skeletal, smooth, and cardiac muscle cells and tissue.
Striated Non-striated

5. Learning Target: Compare skeletal, smooth, and cardiac muscle cells and tissue.
Branched Not branched Tapered

6. Learning Target: Compare skeletal, smooth, and cardiac muscle cells and tissue.
Single nucleus Multinucleated

7. True or False
Smooth muscle is found primarily in the musculature of the extremities. Baloney Smooth muscle is found lining organs and it is the type of muscle making up the iris of the eye.

8. True or False
The two muscle cells that contract without conscious thought are cardiac and smooth.
Truth

9. True or False Skeletal muscle cells have many nuclei. Truth
Long skeletal muscle cells can have 1000 nuclei.

10. True or False
Without skeletal muscle tissue you would not have any facial expression.
Truth
Skeletal muscles attach to facial bones such as the zygomatic bone.

11. True or False
The only type of muscle cell lacking striations is smooth.
That’s right- It’s smooooth.

12. What type of cells are these?

13. What type of cells are these?

14. What type of cells are these?

15. Tissues associated with the muscular system
Skeletal muscle tissue
Supplies nutrients and oxygen to muscle tissue and carries away waste products Covers and holds muscles in place (fascia) Aids in skeletal movement and facial expression Forms tendons Transmits impulses and messages to muscles Contracts hollow internal organs Allows for rhythmic contraction of the heart

16. Tissues associated with the muscular system
Smooth muscle tissue
Supplies nutrients and oxygen to muscle tissue and carries away waste products Covers and holds muscles in place (fascia) Aids in skeletal movement and facial expression Forms tendons Transmits impulses and messages to muscles Contracts hollow internal organs Allows for rhythmic contraction of the heart

17. Tissues associated with the muscular system
Cardiac muscle tissue
Supplies nutrients and oxygen to muscle tissue and carries away waste products Covers and holds muscles in place (fascia) Aids in skeletal movement and facial expression Forms tendons Transmits impulses and messages to muscles Contracts hollow internal organs Allows for rhythmic contraction of the heart

18. Tissues associated with the muscular system
Dense Regular
Supplies nutrients and oxygen to muscle tissue and carries away waste products Covers and holds muscles in place (fascia) Aids in skeletal movement and facial expression Forms tendons Transmits impulses and messages to muscles Contracts hollow internal organs Allows for rhythmic contraction of the heart

20. Tissues associated with the muscular system
Dense Irregular
Supplies nutrients and oxygen to muscle tissue and carries away waste products Covers and holds muscles in place (fascia) Aids in skeletal movement and facial expression Forms tendons Transmits impulses and messages to muscles Contracts hollow internal organs Allows for rhythmic contraction of the heart

22. Tissues associated with the muscular system
Nervous Tissue
Supplies nutrients and oxygen to muscle tissue and carries away waste products Covers and holds muscles in place (fascia) Aids in skeletal movement and facial expression Forms tendons Transmits impulses and messages to muscles Contracts hollow internal organs Allows for rhythmic contraction of the heart

23. Tissues associated with the muscular system
Blood
Supplies nutrients and oxygen to muscle tissue and carries away waste products Covers and holds muscles in place (fascia) Aids in skeletal movement and facial expression Forms tendons Transmits impulses and messages to muscles Contracts hollow internal organs Allows for rhythmic contraction of the heart