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Pre-Test
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1
A fibrous, flattened, sheet-like tendon is known as
A)fascia
B)an aponeurosis
C)a tendon sheath
D)a broad ligament
2
The connective tissue that surrounds individual muscle fibers is called
A)perimysium
B)epimysium
C)endomysium
D)elastin
3
Choose the true statement regarding skeletal muscle cells.
A)Another term for a skeletal muscle cell is myofibril.
B)Each skeletal muscle cell has many nuclei and mitochondria.
C)The muscle cell membrane is called the sarcoplasm.
D)Skeletal muscle cells never extend the full length of a muscle.
4
The dark bands in skeletal muscle that contribute to its striated appearance are known as
A)A bands
B)Z bands
C)H bands
D)I bands
5
The sarcomere, the basic unit of skeletal muscle, extends from
A)A band to A band
B)M line to M line
C)H band to H band
D)Z line to Z line
6
Which of the following is not characteristic of the motor end plate on a muscle fiber?
A)many nuclei
B)synaptic vesicles
C)abundant mitochondria
D)extensive folding of the sarcolemma
7
When the cross-bridge of the myosin molecule forms linkages with actin filaments and bend, the result is
A)shortening of the muscle fiber
B)creation of a high energy bond
C)membrane polarization
D)release of acetylcholine
8
ATPase is stored in
A)sarcoplasmic reticulum
B)the globular portion of the myosin filament
C)transverse tubules
D)muscle cell cytoplasm
9
When a nerve impulse reaches the end of a motor neuron,
A)the number of synaptic vesicles increases
B)muscle fibers stretch
C)calcium ions move out of the cytoplasm of the neuron
D)acetylcholine is released
10
Muscles produce the majority of the heat of the body.
A)True
B)False





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