The major function of the _____________ is to produce mucus to prevent the eyes from drying out
Receptors for dynamic equilibrium are called ________ ___________. They are located in the semicircular canals of the ear, and they respond to head movements. They respond to rotation forces to monitor the position of the head.
olfactory receptor cells
They have a short life span of about 60 days. They are ciliated. They are chemoreceptors.
________________ is a "hardening of the ear"; it decreases the ability of the ossicles of the ear to transmit vibrations.
____________ syndrome affects all three parts of the inner ear. It is characterized by tinnitus, vertigo, nausea, and vomiting.
outer hair cells stiffen the basilar membrane
As sound levels increase in the spiral organ (of Corti), . . .
The tastant must contact the basal cells of the taste buds.
Which of the following is not a requirement for something to be tasted?
-The tastant must dissolve in saliva.
-The tastant must diffuse into a taste pore.
-The tastant must contact gustatory hairs.
-The tastant must contact the basal cells of the taste buds.
Our response to body imbalance must be reflexive; we do not have time to think about adjustments to prevent a fall or stumble. Therefore, information from balance receptors goes directly to reflex centers in the _______ _______.
branch of facial nerves called _________ ________ transmits taste sensations from the anterior 2/3 of the tongue
can be caused by damage to the receptors in the cochlea or brain damage in the auditory regions
_________, an olfactory disorder is caused by head injuries or the aftereffects of nasal cavity inflammation
both the inner surface of the eyelids and the visible portion of the sclera
The conjunctival mucous membrane covers __________.
cornea, anterior segment, pupil, lens, posterior segment
list the passage of light entering the cornea
protect the hearing receptors from loud sounds
The tiny skeletal muscles associated with the ossicles of the middle ear function to __________.
__________ receptors are one of the few types of neurons that can replace themselves in adult life.
bleaching of the pigment
process of breaking down the retinal-opsin combinations that form the rhodopsin found in the rods and cones
The ________ muscles (also called the dilator pupillae) contract to dilate the pupil in dim light.
In response to bright light, the pupils constrict; this is a result of a contraction of the sphincter pupillae (also called the __________ muscles).
Place the following events in the order in which they occur during sound transmission:
1. Tympanic membrane vibrates
2. Internal ear fluids are set in motion
3. Hearing receptors are stimulated
4. Ossicles of the ear vibrate
5. Auditory cortex is stimulated