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A & P Chapter 15 (Part C)
The Special Senses
Terms in this set (16)
The receptive structures for smell are the:
olfactory receptor cells & cilia
In detection of smell, odorants themselves:
bind to receptors & stimulate opening of ion channels
The olfactory receptor G-protein known as G olf probably activates which enzyme?
Taste is 80% smell. The relationship between smell & taste is evidenced by the fact that both sensations are a type of ________.
The ________ papillae are involved in the sensations of taste & have taste buds embedded in their surfaces. They lie near the BACK of the palatine section of the tongue & are arranged in a V-shaped formation directed toward the throat.
-describes the way glutamate & some nucleotides taste
-signals nutritious, desirable foods
The hearing receptors are located in the _______.
Sound waves are transmitted from the external environment to the middle ear by the _____________.
The middle ear ossicles serve to __________ the sound waves onto the oval window.
Sound waves are transmitted DIRECTLY into the inner ear by movements of the
The tensor tympani muscle arises from the wall of the pharyngotympanic tube & inserts on the __________.
Most chambers in the internal ear are filled with perilymph. However, the _______ is part of the membraneous lybyrinth & therefore is filled with endolymph.
The ________ of sound waves is interpreted as differing pitches, whereas the ________ of sound waves is interpreted as loudness.
The organ of Corti sends electrical information about sound to the brain. The perceived pitch of a sound is determined by ____________.
the location of the activated hair cells on the basilar membrane.
Transduction of sound stimuli occurs as a result of:
-bending of the hair cells, which stimulates the opening of the mechanically gated ion channels in their membrane
-a receptor potential generation
- release of the neurotransmitter glutamate
The ________ provides a reference point for the direction of bending of stereocilia on hair cells.
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