Chapter 15: Study Questions

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

Aqueous humor

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

Crista ampullaris

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

Macula

Tinnitus, vertigo, and gradual hearing loss typify the disorder called ________. A) Ménière's syndrome B) conjunctivitis C) strabismus D) motion sickness

Ménière's syndrome

Chemically sensitive cilia are found in this structure. A) Macula B) Taste buds C) Olfactory epithelium D) Crista ampullaris

Olfactory epithelium

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

Pharyngotympanic tube

Select the correct statement about olfaction. A) Olfactory receptors have a high degree of specificity toward a single type of chemical. B) Some of the sensation of olfaction is actually one of pain. C) Substances must be volatile and hydrophobic in order to activate olfactory receptors. D) Olfactory adaptation is only due to fading of receptor cell response.

Some of the sensation of olfaction is actually one of pain.

Chemically sensitive microvilli found in this structure. A) Macula B) Taste buds C) Olfactory epithelium D) Crista ampullaris

Taste buds

Explain why your nose runs during and immediately after a good cry.

The tears flow into the lacrimal canaliculi and then into the nasolacrimal sac. As the sac fills, the tears begin to run down the nasolacrimal duct and out your nose.

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

Tympanic membrane

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

Vestibule

Receptors for hearing are located in the ________. A) cochlea B) semicircular canals C) tympanic membrane D) vestibule

cochlea

Light passes through the following structures in which order? A) vitreous humor, lens, aqueous humor, cornea B) cornea, aqueous humor, lens, vitreous humor C) cornea, vitreous humor, lens, aqueous humor D) aqueous humor, cornea, lens, vitreous humor

cornea, aqueous humor, lens, vitreous humor

Seventy percent of all sensory receptors are located in the ________. A) eye B) ears C) skin D) nose

eye

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

fovea centralis

The eye muscle that elevates and turns the eye laterally is the ________. A) lateral rectus B) superior oblique C) inferior oblique D) medial rectus

inferior oblique

What structure regulates the amount of light passing to the visual receptors of the eye? A) aqueous humor B) lens C) cornea D) iris

iris

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

lens

The elasticity of the lens decreases with age. This leads to which of the following? A) a clouding of the lenses know as a cataract B) less accommodation of the lenses and difficulty focusing on nearby objects C) less light getting to the retina and diminished visual acuity D) lowered accommodation of the pupillary reflex and blurry vision

less accommodation of the lenses and difficulty focusing on nearby object

Which of the follow types of neurons are replaced throughout adult life? A) olfactory receptor cells B) retinal bipolar cells C) retinal ganglion cells D) auditory outer and inner hair cells

olfactory receptor cells

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

otoliths

Which of the following structures is not part of the external ear? A) pinna B) external acoustic meatus C) tympanic membrane D) pharyngotympanic tube

pharyngotympanic tube

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

retina

Taste is solely a response to chemicals dissolved in ________.

saliva

The blind spot of the eye is caused by ________. A) more rods than cones within the retina B) the macula lutea interrupts the nerve pathway C) an absents of cones in the foveae D) there are no photoreceptors where the optic nerve leaves the eye

there are no photoreceptors where the optic nerve leaves the eye