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Anat/Phys Muscular System #2
Test Description: Anat/Phys Explorations
Instructions: Answer all questions to get your test result.
1) Which structure stores and releases calcium inside a muscle cell?
A
myofilaments
B
sarcolemma
C
sarcoplasmic reticulum
D
mitochondrion
2) The functional contractile unit of a muscle cell is
A
the sarcomere.
B
the T tubules.
C
the sarcolemma.
D
the sarcoplasmic reticulum.
3) In a sarcomere, the A band contains
A
only thin filaments.
B
only thick filaments.
C
no filaments.
D
thick and thin filaments.
4) Which of the following is made of actin?
A
thick filaments
B
thin filaments and the M line
C
M line
D
thin filaments
5) What is produced during anaerobic respiration that causes muscles to burn?
A
oxaloacetic acid
B
acetyl CoA
C
lactic acid
D
pyruvic acid
6) A muscle that helps the primary muscle in the movement of joint is a(n)
A
synergist.
B
agonist.
C
prime mover.
D
antagonist.
7) All of the following are used to name muscles EXCEPT
A
movement.
B
location.
C
types of muscle fibers.
D
size.
8) All are arrangements of muscle fascicles EXCEPT
A
trapezoid.
B
circular.
C
pennate.
D
convergent.
9) The molecule only found in muscle cells and acts to add a phosphate to ADP to make ATP is
A
actin.
B
myoglobin.
C
myosin.
D
creatine phosphate.
10) A contraction in which the muscle does not shorten is called
A
isostatic.
B
isosceles.
C
isotonic.
D
isometric.
*select an answer for all questions
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