The type of voltage-gated channel that possesses an inactivation gate that temporarily closes after the channel is active is the

A.  voltage-gated potassium channel.
B.  voltage-gated sodium channel.
C.  voltage-gated calcium channel.
D.  voltage-gated chloride channel.


B

Anatomy & Physiology

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Air entering the potential space of the pleural cavity is called

A. pneumothorax. B. pneumonia. C. internal respiration. D. pulmonary ventilation.

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The dorsal/posterior nuclei of the thalamus includes the

A) basal nuclei. B) lateral and medial geniculate nuclei. C) mammillary body. D) interthalamic adhesion. E) red nucleus.

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During the gastric phase of gastric secretion, which of the following stimulates stomach contractions?

A) secretin B) HCl C) pepsinogen D) gastrin E) trypsin

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The point of contact between the nerve and the muscle fibers it stimulates is called a:

a. motor unit b. neuromuscular junction c. motor neuron d. neurotransmitter

Anatomy & Physiology