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Odorant receptors (ORs) are:

Sympathetic activity causes pupillary ________.

The receptors for sound are:

A postganglionic neuron with short axon is characteristic of the __________ nervous system.

Which of the following is a hypothalamic hormone:

The _______ filters out unnecessary information, allowing for attention to be directed at select items.

The optic nerve consists of axons of ____________ cells.

The _________ is the receptive area of the semicircular canals.

In photoreceptor cells, the cyclic nucleotide-gated (CNG) channel is _________ when “in the dark”.

___________ is involved in sexual bonding, maternal-child bonding, and also stimulates the “let down reflex” in nursing mothers.