To transmit a nerve impulse, acetylcholine diffuses across a space called the ________ to bind to receptors on the postsynaptic membrane.

Fill in the blank(s) with the appropriate word(s).


synaptic cleft

Anatomy & Physiology

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the brachioradialis muscles does which of the following actions?

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The small paired structures at the base of the penis that secrete a thick, alkaline mucus are the

A) seminal vesicles. B) prostate glands. C) preputial glands. D) Bartholin glands. E) bulbo-urethral glands.

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The shape of the lens is controlled by the

A) pupillary sphincter muscles. B) pupillary radial muscles. C) ciliary muscles. D) iris. E) cornea.

Anatomy & Physiology