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Which group of muscles is located on the posterior thigh?

Quadriceps femoris

Rotator cuff muscles

Muscles of mastication

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The quadriceps femoris group and the hamstrings

lie along the thigh.

lie along the anterior part of the leg.

shrug the shoulders.

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The orbicularis oris muscle

flexes the head.

is the smiling muscle.

closes the eye.

surrounds the mouth.

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With regard to the action potential,

the Na+/K+ pump is responsible for repolarization.

the efflux of K+ causes repolarization.

movement from the resting membrane potential to threshold potential is due to the outward leak of K+.

both depolarization and repolarization are due to an influx of Na+.

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The gastrocnemius and the soleus are commonly called the

rotator cuff muscles.

toe dancer's muscles.

trumpeter's muscles.

swimmer's muscles.

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What makes white matter "white"?

Neurotransmitters

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The medulla oblongata descends into the vertebral cavity through the

foramen magnum.

corpus callosum.

obturator foramen.

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As the electrical signal travels through the T tubules, it causes the

inactivation of the ACh within the neuromuscular junction.

release of the neurotransmitter ACh from the axon terminal in the neuromuscular junction.

release of calcium from the sarcoplasmic reticulum.

myosin heads to detach from the actin.

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The purpose of myoglobin is to

convert lactic acid to glucose.

make the muscle red.

sequester calcium.

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Which muscle is located in the lower extremities?

Serratus anterior

Peroneus longus

Latissimus dorsi

Pectoralis major

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