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1. One of the following muscle names
refers to a superficial muscle that lies between the ribs. Which one is it?
A. Serratus anterior
B. Rectus femoris
C. Extensor carpi radialis brevis
D. External intercostals.
2. Which of the following muscles is NOT
a flexor of the knee?
A. Semimembranosus
B. Semitendinosus
C. Rectus femoris
D. Biceps femoris
3. Which molecule in a muscle cell has a
cross-bridge that attaches to a binding site to effect the shortening of the
cell?
A. Tropomyosin
B. Myosin
C. Actin
D. Troponin.
4. Which
1. One of the following muscle names
refers to a superficial muscle that lies between the ribs. Which one is it?
A. Serratus anterior
B. Rectus femoris
C. Extensor carpi radialis brevis
D. External intercostals.
2. Which of the following muscles is NOT
a flexor of the knee?
A. Semimembranosus
B. Semitendinosus
C. Rectus femoris
D. Biceps femoris
3. Which molecule in a muscle cell has a
cross-bridge that attaches to a binding site to effect the shortening of the
cell?
A. Tropomyosin
B. Myosin
C. Actin
D. Troponin.
4. Which event causes the thick filament
to slide over the thin filament (i.e. the power stroke) during muscle
contraction?
A. The attachment of Ca ions to
troponin
B. The hydrolysis of ATP to ADP,
inorganic phosphate and energy
C. The engagement of the head of the
myosin cross-bridge with its binding site on actin
D. The attachment of a molecule of ATP
to the head of myosins cross-bridge.
5. Which muscle is located on the
posterior part of the forearm?
A. Flexor digitorum superficialis
B. Flexor digitorum profundus
C. Extensor digitorum
D. Triceps brachii.
