1. What is the function of skeletal muscle?
2. Describe the major components of skeletal muscle cels:
- Myofibrils
- Sarcomeres
- Motor unit
- Neuromuscular junction
3. How does skeletal muscle produce movement?
4. How do actin and myosin interact in a sarcomere to bringabout muscle contraction? What roles do ATP and calcium play?
5. What is the functiion of the sarcoplasmic reticulum in musclecell contraction?
6. Explain why calcium ions and ACh are vitals for musclecontraction.
7. What is a motor unit? Why does a rapid series of muscletwitches yield a stronger overall contraction than a singletwitch?
8. What are the structural and functional differences betweenslow and fast muscle?
9. The__________and__________systems work together to move thebody and specific body parts.
10. The 3 types of muscle tissue are:
11. Muscle fibers shorten when__________slidesover__________
a. myosin, actin b. actin, myosin c. myoglobin, actin d. myosin,sarcomeres
12. The__________is the basic unit of muscle contraction.
a. myofibril b. sarcomere c. muscle fiber d. myosin filament
13. Skeletal muscle contraction requires__________
a. calcium ions b. ATP c. arrival of a nerve impulse d. all ofthe above
14. Nerve impulses first stimulate a skeletal muscle fiberat___________
a. T tubules b. sarcomeres c. neuromuscular junctions d. actinbinding sites
15. Mention the muscles located in:
- Torax
- Abdomen
- Arms
- Legs
- Back
- Gluteus
