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If you are in the woods and a scary bear growls, your pupils are likely to become:

In the figure to the right, which cell is not a true neuron, but releases neurotransmitter?

When you move up as you change from a sitting to a standing position, the receptor of the ______ senses this vertical acceleration.

Vasoconstriction can most directly result in:

______ waves are expected in an electroencephalogram (EEG) of a healthy adult that is awake and whose mind is relaxed or wondering. 

In hearing, the stereocilium of the inner hair cells is bent when it is pushed against the ______.

Which of the listed receptors are involved in sensing body position by measuring stretch in muscles?

Sensory information from the vestibule has several endpoints.  One is the nerve fibers projected (sent) to the ______ where it functions in production of smooth movement?  

The sympathetic system is also known as the ________ division.

The fact that cones exhibit less neuronal convergence than rods do is part of the reason that _____.