Exam 6: The Peripheral Nervous System - Afferent Division - Special Senses

Figure 6-20 Answer the following questions using the accompanying diagram. -Which number in the accompanying figure represents a horizontal cell?

The inner hair cells communicate via a chemical synapse with the terminals of afferent nerve fibers making up the ____________________ nerve.

Pitch discrimination depends on the shape and properties of the ____.

Some receptors diminish the extent of their depolarization despite sustained stimulus strength,a phenomenon called ____.

The peripheral nervous system (PNS)interprets greater hair bending as a louder sound.

Approximately how many chemoreceptors for taste sensation (taste buds)are present in the oral cavity and throat of a human being?

Depth perception relies on what kind of field of vision?

Sensory information is categorized as somatic (body sense)sensation or special senses.

What does the vomeronasal organ (VNO)within the nose detect?

There are five primary tastes: salty,sour,sweet,____________________,and ____________________.

Impulses from polymodal nociceptors that respond to chemicals released into the ECF from damaged tissue are carried by small,unmyelinated ____________________.

What is the photopigment in rods?

Rod and cone cells contain a G protein called cyclic GMP.

Endogenous opioids include the endorphins,enkephalins,and dopamine.

The two structures most important in the eye's refractive ability are the iris and the pupil.

Describe the role of the otolith organs.

Tonic receptors do not adapt or adapt slowly.

The primary visual cortex is situated in the ____________________ lobe of the brain.

What kind of nerves carries subconscious input information?

What is the fastest transmission rate of A-delta fibers?