Chapter 15- Special Senses Study Guide

The sensory layer of the eye. A) Aqueous humor B) Retina C) Fovea centralis D) Lens

The structure most responsible for focusing light rays that enter the eye. A) Aqueous humor B) Retina C) Fovea centralis D) Lens

Helps maintain the intraocular pressure; located in the anterior part of the eye. A) Aqueous humor B) Retina C) Fovea centralis D) Lens

Area of greatest visual acuity. A) Aqueous humor B) Retina C) Fovea centralis D) Lens

Ear stones. A) Pharyngotympanic tube B) Tympanic membrane C) Otoliths D) Vestibule

Connects the middle ear with the nasopharynx. A) Pharyngotympanic tube B) Tympanic membrane C) Otoliths D) Vestibule

Separates external acoustic meatus from the middle ear. A) Pharyngotympanic tube B) Tympanic membrane C) Otoliths D) Vestibule

Contains utricle and saccule. A) Pharyngotympanic tube B) Tympanic membrane C) Otoliths D) Vestibule

Detects linear acceleration. A) Pharyngotympanic tube B) Tympanic membrane C) Otoliths D) Vestibule

A condition that can result from a deficiency of vitamin A. A) Night blindness B) Glaucoma C) Conduction deafness D) Otitis media

A condition of deafness that may result from otosclerosis. A) Night blindness B) Glaucoma C) Conduction deafness D) Otitis media

An inflammation of the lining of the middle ear. A) Night blindness B) Glaucoma C) Conduction deafness D) Otitis media

A condition often leading to blindness due to increased intraocular pressure. A) Night blindness B) Glaucoma C) Conduction deafness D) Otitis media

Hair cells receptive to changes in dynamic equilibrium are found in this structure. A) Olfactory epithelium B) Crista ampullaris C) Macula D) Taste buds

Gustatory cells are found in this structure. A) Olfactory epithelium B) Crista ampullaris C) Macula D) Taste buds

Hair cells receptive to changes in static equilibrium are found in this structure. A) Olfactory epithelium B) Crista ampullaris C) Macula D) Taste buds

The receptors of olfaction are found in this structure. A) Olfactory epithelium B) Crista ampullaris C) Macula D) Taste buds

Houses the spiral organ (of Corti.) A) Tympanic membrane B) Cochlear duct C) Spiral organ (of Corti) D) Vestibule

The receptor organ for hearing. A) Tympanic membrane B) Cochlear duct C) Spiral organ (of Corti) D) Vestibule

The central part of the bony labyrinth. A) Tympanic membrane B) Cochlear duct C) Spiral organ (of Corti) D) Vestibule

A membrane that transmits sound vibrations to the auditory ossicles. A) Tympanic membrane B) Cochlear duct C) Spiral organ (of Corti) D) Vestibule

Loss of hearing resulting from prolonged exposure to high-intensity sounds. A) Sensorineural deafness B) Tinnitus C) Conduction deafness

Can result from the fusion of the auditory ossicles. A) Sensorineural deafness B) Tinnitus C) Conduction deafness

A possible side effect of medications such as aspirin. A) Sensorineural deafness B) Tinnitus C) Conduction deafness

One of the most common results of otitis media. A) Sensorineural deafness B) Tinnitus C) Conduction deafness

Can result from impacted cerumen. A) Sensorineural deafness B) Tinnitus C) Conduction deafness

The mucous membrane that lines the eyelids and is reflected over the anterior surface of the eyeball is the conjunctiva.

Researchers have found that retinal ganglionic fields are of two types: on center or off center.

The photoreceptor cells are sensitive to damage from light.

Both the cornea and the lens are vascular.

The optic disc is the location where the optic nerve leaves the eyeball.

Sour taste receptors are stimulated by hydrogen ions of acidic food substances.

The fluid contained within the membranous labyrinth is called perilymph.

The extrinsic eye muscle motor units contain only 8 to 12 muscle cells and in some cases as few as 2 or 3 muscle cells.

Retinal detachment always results in loss of vision.

The structure that allows equalization of the pressure in the middle ear with that outside the body is the external auditory meatus.

The bending of light rays is called reflection.

The anterior chamber of the eye is filled with vitreous humor.

The neural layer of the retina prevents excessive scattering of light within the eye.

In order for sound to reach the spiral organ (of Corti), the auditory ossicles must vibrate the oval window and set the endolymph in motion.

Sound is generally perceived in the occipital lobe of the cerebral cortex.

Light passes through the entire thickness of the neural layer of the retina to excite the photoreceptors.

Without a functioning crista ampullaris, the semicircular canals would not function.

Contraction of the ciliary muscle causes the lens to bend the light less.

Theoretically, an individual born without a middle ear would be able to hear by bone conduction with a hearing aid.

When we move from darkness to bright light, retinal sensitivity is lost, but visual acuity is gained.

The function of the lens of the eye is to allow precise focusing of light on the retina.

Each olfactory cortical neuron receives input from one receptor at a time.

Odorants must be volatile to be smelled.