Acetylcholine is a
A) neurotransmitter.
B) hormone.
C) synthetic drug.
D) pigment.
Correct Answer:
Verified
Q52: The _ nervous system consists of the
Q53: A resting neuron
A) has a positive charge
Q54: The space between the axon of one
Q55: Communication between neurons is achieved by
A) hormones.
B)
Q56: Hormone messages are received by
A) neurotransmitters.
B) receptor
Q58: The fovea centralis has the highest concentration
Q59: Pitch is determined by
A) frequency of the
Q60: _ is an exocrine gland.
A) The kidney
B)
Q61: Balance is maintained by
A) the tympanum.
B) ear
Q62: Skeletal muscle contractions are under the control
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