Name _________________
Mrs. Grant, Anatomy
Chapter 7: Muscular system study guide
I.
Types and functions of Muscles (pp. 110) a. cardiac muscle, b.
both smooth and c. cardiac, skeletal muscle
_____ 1. involuntary muscle tissue
_____ 2. muscle tissue with intercalated discs
_____ 3. striated muscle tissue
4. List the four functions of the muscular system:
a.
b.
c.
d.
II.
Skeletal Muscle structure and contraction (pp. 110 – 117)
A. Complete the following statements: fibers, fascicle,
epimysium, perimysium, endomysium
5. Individual cells are covered in the muscle with a connective tissue
layer called __________________.
6. Skeletal muscle cells are specifically called muscle _____________.
7. A bundle of muscle cells in the muscle are called the ____________.
8. Each bundle of muscle cells is encased by the _______________.
9. The entire muscle is covered by the fascia layer called the
__________________.
1
Matching:
_____ 10. ATP
_____ 11. actin
_____ 12. calcium
_____ 13. myosin
_____
_____
_____
_____
14.
15.
16.
17.
myofibril
neuromuscular junction
sarcolemma
T
a. plasma membrane
b. tubule contains transverse
system
c. energy storage compound
d. where motor neuron fiber meets
the muscle fiber
e. thick myofilament
f. thin myofilament
g. ion stored in sacs
h. a series of sarcomeres are its
units.
Physiology of contraction (113-116)
18. rate of effective muscle contraction ________
19. summation of simple twitches ______
20. Fatigue is shown at ________
21.A latent period composes part of the responses at ______
22.Tetanus is shown at _______
23. What are the sources of ATP for muscle contraction? (3 points)
24. What is the reason for lactic acid build up and how is it removed?
25. If a muscle fiber obeys the all-or-none law, then how can muscles
exhibit various strengths of contractions?
2
26. Describe the contraction of muscle according to the sliding
filament theory. Begin at the impulse.
27. Explain the difference between fast and slow twitch muscle.
28. Place the following terms in order from the largest part of the
muscle to the smallest: myofibril, myofilament, muscle fiber, fascicle,
sarcomere, perimysium, endomysium
3
Matching:
10. _____ ATP
11. _____ actin
12. _____ calcium
13. _____ myosin
14.
15.
16.
17.
_____
_____
_____
_____
a. plasma membrane
b. tubule composing transverse
system
c. energy storage compound
d. where motor neuron fiber meets
muscle
myofibril
neuromuscular junction
sarcolemma
T
4