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Questions Bank (1402010 total)
Which of the following is true of the diencephalon?
Contains the midbrain, pons, and medulla oblongata
0%
Is a brain stem structure
0%
Contains the thalamus and hypothalamus
0%
Is called the
vital center
0%
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Which flat muscle covers the forehead and raises the eyebrows (for a "surprised" look)?
Masseter
0%
Zygomaticus
0%
Buccinator
0%
Frontalis
100%
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Which of the following is responsible for muscle relaxation?
Calcium is pumped back into the sarcoplasmic reticulum.
0%
The sarcomere runs out of ATP.
0%
Calcium floods the area of the sarcomere, allowing for the interaction of actin and myosin.
0%
Acetylcholinesterase in the neuromuscular junction is depleted.
0%
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The "maters"
are motor neurons.
0%
are meninges.
0%
are membranes that are restricted to the cranial cavity.
0%
are tough connective tissue membranes.
0%
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Which of the following is not descriptive of the medulla oblongata?
Vital center
0%
Control of respirations
0%
Brain stem structure
0%
"Executive" function
100%
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Which of the following best describes a sphincter muscle?
Encircle
0%
Oblique
0%
Aponeurosis
0%
Straight
0%
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What is the site of calcium storage in a relaxed skeletal muscle?
Sarcoplasmic reticulum
100%
T tubule
0%
Fascicle
0%
Neuromuscular junction
0%
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Which of the following describes actin and myosin?
Considered contractile proteins
0%
Form force-generating cross-bridges
0%
Sliding filaments
0%
All of the above
0%
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To which contractile protein does calcium bind?
Actin
0%
Tropomyosin
0%
Thick filament
0%
Troponin
0%
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Actin is
a contractile protein that is part of the
thin filament
.
100%
stored within the sarcoplasmic reticulum.
0%
located within the neuromuscular junction.
0%
called the
thick filament
.
0%
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