Questions and Answers
It is composed of auricle and external acoustic meatus
Outer ear
what most people call the “ear”—the shell-shaped structure surrounding the auditory canal opening
Auricle or the pinna
which secrete waxy yellow cerumen, or earwax, which provides a sticky trap for foreign bodies and repels insects
Ceruminous glands
Our hearing apparatus allows us to hear an extraordinary range of sound, and our highly sensitive equilibrium receptors keep our nervous system continually up to date on the position and movements of the head.
Signup and view all the answers
The canal ends at the eardrum, which separates the external from the middle ear
Signup and view all the answers
is a small, air-filled, mucosa-lined cavity within the temporal bone
Signup and view all the answers
runs obliquely downward to link the middle ear cavity with the throat, and the mucosae lining the two regions are continuous.
Signup and view all the answers
Inflammation of the middle ear, is a fairly common result of a sore throat, especially in children, whose pharyngotympanic tubes run more horizontally.
Signup and view all the answers
What are the three smallest bone in the body
Signup and view all the answers
which transmit the vibratory motion of the eardrum to the fluids of the inner ear
Signup and view all the answers
What are the three subdivisions of the bony labyrinth
Signup and view all the answers
The bony labyrinth is filled with a plasmalike fluid called
Signup and view all the answers
The membranous labyrinth itself contains a thicker fluid called
Signup and view all the answers
The bony labyrinth is filled with a plasmalike fuid called_____?
Signup and view all the answers
The equilibrium receptors of the inner ear, collectively called the_____?
Signup and view all the answers
The vestibular apparatus can be divided into two Chambers what are these?
Signup and view all the answers
tiny stones made of calcium salts.
Signup and view all the answers
receptors, found in the semicircular canals, respond to angular or rotational movements of the head rather than to straight-line movements.
Signup and view all the answers
is defined as hearing loss of any degree—from a slight loss to a total inability to hear sound.
Signup and view all the answers
What are the two types of deafness
Signup and view all the answers
results when something interferes with the conduction of sound vibrations to the fluids of the inner ear. Something as simple as a buildup of earwax may be the cause
Signup and view all the answers
A ruptured eardrum
Signup and view all the answers
Inflammation in the middle ear
Signup and view all the answers
occurs when there is degeneration or damage to the receptor cells in the spiral organ of Corti, to the cochlear nerve, or to neurons of the auditory cortex.
Signup and view all the answers
A serious pathology of the inner ear is___? The exact cause of this condition is not fully known, but suspected causes are arteriosclerosis, degeneration of cranial nerve VIII, and increased pressure of the inner ear fluids.
Signup and view all the answers
The receptors for taste and olfaction are classified as?
Signup and view all the answers
The dorsal tongue surface is covered with mall peglike projections?
Signup and view all the answers
What is the receptor for the sense of taste?
Signup and view all the answers
respond to hydrogen ions (H+), or the acidity of the solution;
Signup and view all the answers
receptors to metal ions in solution.
Signup and view all the answers
receptors to alkaloids;
Signup and view all the answers
a taste discovered by the Japanese, is elicited by the amino acid glutamate, which appears to be responsible for the “beef taste” of steak and the flavor of monosodium glutamate, a food additive.
Signup and view all the answers
