Older individuals sometimes use large amounts of perfume because they lose their sense of smell; this is related to

A) central adaptation.
B) a decrease in the number of olfactory receptors.
C) a decrease in sensitivity of the olfactory cortex.
D) sensory adaptation.
E) None of the answers are correct.


B) a decrease in the number of olfactory receptors.

Anatomy & Physiology

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The glial cell with perivascular feet that wrap around capillaries in the CNS is the

A.  astrocyte. B.  ependymal cell. C.  neurolemmocyte. D.  microglial cell. E.  oligodendrocyte.

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The peptide ________ may play a role in the positive feedback of estrogen on GnRH secretion.

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

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Ammonia usually ________.

A. acts as a buffer B. ionizes to form a hydroxyl ion C. acts as a base D. acts as an acid

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What is the correct order of structures as you move from outside a muscle cell, to deep inside it?

A) fiber, myofibril, myofilament B) myofilament, fiber, myofibril C) myofibril, myofilament, fiber D) myofilament, myofibril, fiber

Anatomy & Physiology