This document contains a quiz about the muscular system organized into multiple levels and rounds of questions. It covers topics such as the three types of muscle tissue, muscle fiber structure, muscle contraction mechanisms, roles of calcium and acetylcholine, and functions of connective tissues like the endomysium. The final question indicates that muscle contraction occurs through actin fibers sliding past myosin fibers, due to the cross-bridge cycling action of the myosin heads.

1. Chapter 6: The Muscular System
Level 1 Level 2 Level 3 Level 4
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FINAL ROUND
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2. Level 1:
$100 Question
A large, sheetlike tendon is a(an)
a. tensor.
b. ligament.
c. synergist.
d. aponeurosa.
ANSWER
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3. Level 1:
$100 Answer
A large, sheetlike tendon is a(an)
a. tensor.
b. ligament.
c. synergist.
d. aponeurosa.
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4. Level 1:
$200 Question
The 3 types of muscle tissue are
a. connective, actin, myosin
b. aerobic, anaerobic, striated
c. skeletal, voluntary, involuntary
d. skeletal, smooth, cardiac
ANSWER
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5. Level 1:
$200 Answer
The 3 types of muscle tissue are
a. connective, actin, myosin
b. aerobic, anaerobic, striated
c. skeletal, voluntary, involuntary
d. skeletal, smooth, cardiac
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6. Level 1:
$300 Question
The propagated (growing) action potential
makes the sarcolemma permeable to this
ion moving into the cell.
a. Na+
b. Cl−
c. Ca2+
d. K+ ANSWER
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7. Level 1:
$300 Answer
The propagated action potential makes the
sarcolemma permeable to this ion moving
into the cell.
a. Na+
b. Cl−
c. Ca2+
d. K+
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8. Level 1:
$400 Question
When Na+ enters the sarcolemma of a
muscle cell during an action potential, it
stimulates ____ to be released from the
sarcoplasmic reticulum.
a. Ca+
b. K+
c. ATP
d. Na+
ANSWER
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9. Level 1:
$400 Answer
When Na+ enters the sarcolemma of a muscle
cell during an action potential, it stimulates
____ to be released from the sarcoplasmic
reticulum.
a. Ca+
b. K+
c. ATP
d. Na+
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10. Level 2:
$100 Question
Smooth muscle cells are
a. voluntary
b. striated
c. involuntary
d. multinucleate
ANSWER
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11. Level 2:
$100 Answer
Smooth muscle cells are
a. voluntary
b. striated
c. involuntary
d. multinucleate
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12. Level 2:
$200 Question
Which of the following is NOT a function of
the muscular system:
a. production of movement
b. maintenance of posture
c. generation of heat
d. hematopoiesis
ANSWER
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13. Level 2:
$200 Answer
Which of the following is NOT a function of
the muscular system:
a. production of movement
b. maintenance of posture
c. generation of heat
d. hematopoiesis
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14. Level 2:
$300 Question
The mechanical force of contraction is generated by:
a. shortening of the thick filaments
b. shortening of the thin filaments
c. a sliding of thin filaments past thick ones
d. the temporary disappearance of thin filaments
ANSWER
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15. Level 2:
$300 Answer
The mechanical force of contraction is generated by:
a. shortening of the thick filaments
b. shortening of the thin filaments
c. a sliding of thin filaments past thick ones
d. the temporary disappearance of thin filaments
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16. Level 2:
$400 Question
Place these structures of the skeletal muscle in order
from largest to smallest:
1. fascicle
2. muscle fiber (cell)
3. myosin filament
4. sarcomere
a. 1, 2, 3, 4 c. 4, 3, 2, 1
b. 1, 2, 4, 3 d. 2, 1, 4, 3
ANSWER
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17. Level 2:
$400 Answer
Place these structures of the skeletal muscle in order
from largest to smallest:
1. fascicle
2. muscle fiber (cell)
3. myosin filament
4. sarcomere
a. 1, 2, 3, 4 c. 4, 3, 2, 1
b. 1, 2, 4, 3 d. 2, 1, 4, 3
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18. Level 3:
$100 Question
The cell membrane of a muscle cell is
known as a(n)
a. Sarcoplasmic reticulum
b. Myosin head
c. Sarcolemma
d. Fasicle
ANSWER
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19. Level 3:
$100 Answer
The cell membrane of a muscle cell is
known as a(n)
Difference b/t
a. Sarcoplasmic reticulum endomysium &
sarcolemma?
b. Myosin head
c. Sarolemma
d. Fasicle
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20. Level 3:
$200 Question
When the myosin heads link to the thin
filaments they are called
a. articulations.
b. myofibrils.
c. cross bridges.
d. reticuli.
ANSWER
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21. Level 3:
$200 Answer
When the myosin heads link to the thin
filaments they are called
a. articulations.
b. myofibrils.
c. cross bridges.
d. reticuli.
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22. Level 3:
$300 Question
Acetylcholine is:
a. an ion pump on the postsynaptic membrane
b. a source of energy for muscle contraction
c. a component of thick myofilaments
d. a neurotransmitter that stimulates skeletal muscle
ANSWER
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23. Level 3:
$300 Answer
Acetylcholine is:
a. an ion pump on the postsynaptic membrane
b. a source of energy for muscle contraction
c. a component of thick myofilaments
d. a neurotransmitter that stimulates skeletal muscle
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24. Level 3:
$400 Question
Calcium is important to muscle contraction because
a. without it muscles wouldn’t divide
b. Myosin heads are made of calcium
c. it enables myosin to bind to actin
d. It provides the energy needed for the muscle to contract
ANSWER
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25. Level 3:
$400 Answer
Calcium is important to muscle contraction because
a. without it muscles wouldn’t divide
b. Myosin heads are made of calcium
c. it enables myosin to bind to actin
d. It provides the energy needed for the muscle to contract
http://www.sci.sdsu.edu/movies/acti
n_myosin.html
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26. Level 4:
$100 Question
Most of the energy provided for muscle
contraction comes from
a. anaerobic respiration.
b. glycolysis.
c. aerobic respiration.
d. Kreb’s cycle.
ANSWER
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27. Level 4:
$100 Answer
Most of the energy provided for muscle
contraction comes from
a. anaerobic respiration.
b. glycolysis.
c. aerobic respiration.
d. Kreb’s cycle.
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28. Level 4:
$200 Question
This high-energy molecule is found in only
muscle cells.
a. ADP
b. ATP
c. Creatine phosphate
d. Calmodulin
ANSWER
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29. Level 4:
$200 Answer
This high-energy molecule is found in only
muscle cells.
a. ADP
b. ATP
c. Creatine phosphate
d. Calmodulin
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30. Level 4:
$300 Question
Muscles that perform opposite actions to
one another are termed __________.
ANSWER
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31. Level 4:
$300 Answer
Muscles that perform opposite actions to
one another are termed __________.
Antagonists
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32. Level 4:
$400 Question
Explain the function of the endomysium,
epimysium and perimysium
ANSWER
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33. Level 4:
$400 Answer
Explain the function of the endomysium, epimysium and
perimysium
They are all connective tissues. Endomysium – wraps
individual muscle cells
Epimysium – wraps entire muscle
Perimysium – wraps fasicles
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34. FINAL ROUND Question
Basically muscles contract because
a. Myosin fibers get shorter
b. actin fibers slide past myosin
c. Muscle cells degrade and rebuild
d. The sacroplasmic reticulum contracts
ANSWER
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35. FINAL ROUND Answer
Basically muscles contract because
a. Myosin fibers get shorter
b. actin fibers slide past myosin
c. Muscle cells degrade and rebuild
d. The sacroplasmic reticulum
contracts
http://faculty.massasoit.mass.edu/whanna/201/2
01_content/topicdir/muscle/muscle_media/muscl
e_VD/page143/page143.html
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