Anatomy and Physiology Student Structured Notes 12 / 04 / 12 Tuesday Chapter 7 Muscular System # 1-22

1. Mr. Hunter
Anatomy and Physiology
12/04/12
Student Structured Notes
Chapter 7 Muscular System pg. 145-149
NAME_______________________ DATE____________ Per # _____ Points / 22
1. What is the name of the type of muscle
contraction that allows us to maintain
our posture? 8. What happens to body temperature
during periods of generating ATP for
heavy muscle use?
2. Briefly describe this type of contraction.
9. Describe the physiology of muscle
fatigue.
3. What functions do muscles serve when
gravity tends to pull the head and trunk
downward?
4. Healthy survival depends on our body’s
ability to maintain a constant ________
5. What is hypothermia and what harm
does it have on the body?
6. Where does most heat to maintain a
constant body temperature originate
from?
7. Where is energy obtained to produce a
muscle contraction?

2. 12. When oxygen supplies run low, what will
muscles cells do to continue to perform?
13. What compound is produced that may
produce a burning sensation in muscles
during long periods of exercise?
14. What does the term oxygen debt
describe?
15. Read the Health and Well-Being section
on pg. 147. Briefly describe the three
different types of muscle fibers- slow,
fast and intermediate.
16. Explain briefly with examples how other
systems of the body are involved in
producing normal skeletal movement.
10. What happens to the body’s supply of
ATP during exercise? 17. What fiber must muscles cells be
stimulated by before they can cause
skeletal movement?
11. What two components in the muscle’s
blood supply help to regenerate ATP?

3. 18. What is the point of contact between a
nerve ending and a muscle?
19. What chemicals are released by motor
neurons that generate events within the
muscle that causes it to contract?
20. Define threshold stimulus and “all or
none response”

4. Review Question(s)
1. Explain why the individual fibers in the biceps brachii muscle respond to an “all or none”
response but the entire muscle does not? ______________________________________
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2. Explain why “white muscle fibers” are physiologically suited for quick, powerful contractions?
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