Chapter 15 (Lecture) Flashcards by Ashley M

Which structure produces tears?

(a) Tarsal gland
(b) Lacrimal gland
(c) Ciliary gland
(d) Conjunctiva

(b) Lacrimal gland

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The fibrous layer of the eye consists of the

(a) Retina and choroid
(b) Cornea and sclera
(c) Iris and ciliary body
(d) Lens and cornea

(b) Cornea and sclera

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The oily secretion that prevents eyelids from sticking together is produced by the

(a) Lacrimal gland
(b) Tarsal glands
(c) Ciliary glands
(d) Conjunctival glands

(b) Tarsal glands

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Parasympathetic activation of the sphincter pupillae causes

(a) Pupil dilation
(b) Pupil constriction
(c) Lens flattening
(d) Lens bulging

(b) Pupil constriction

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The structure that drains tears into the nasal cavity is the

(a) Lacrimal canaliculus
(b) Nasolacrimal duct
(c) Scleral venous sinus
(d) Ciliary zonule

(b) Nasolacrimal duct

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The iris regulates

(a) Lens shape
(b) Retinal response
(c) Pupil diameter
(d) Tear formation

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The “white” of the eye is the

(a) Cornea
(b) Retina
(c) Sclera
(d) Choroid

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Cones are primarily located in the

(a) Peripheral retina
(b) Macula lutea
(c) Optic disc
(d) Choroid layer

(b) Macula lutea

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Rods are specialized for

(a) Color vision and bright light
(b) Peripheral and dim vision
(c) High acuity color vision
(d) Detecting UV light only

(b) Peripheral and dim vision

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The blind spot of the eye is the location where

(a) Rods are most dense
(b) Cones are most dense
(c) The optic nerve exits
(d) The macula lutea lies

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The region of the retina providing the highest visual acuity is the

(a) Optic disc
(b) Macula lutea
(c) Ora serrata
(d) Ciliary body

(b) Macula lutea

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The anterior chamber of the eye contains

(a) Vitreous humor
(b) Aqueous humor
(c) Cerebrospinal fluid
(d) Synovial fluid

(b) Aqueous humor

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Dynamic equilibrium is detected by receptors in the

(a) semicircular canals
(b) cochlea
(c) saccule
(d) macula lutea

semicircular canals

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Static equilibrium is detected primarily in the

(a) semicircular canals
(b) cochlea
(c) utricle and saccule
(d) external acoustic meatus

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The visual pigment in rods is

(a) Melanin
(b) Rhodopsin
(c) Retinal
(d) Vitamin A

(b) Rhodopsin

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Near vision requires all of the following except

(a) Accommodation
(b) Convergence
(c) Pupillary constriction
(d) Sympathetic activation

(d) Sympathetic activation

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The round window serves to

(a) equalize middle ear pressure
(b) protect ossicles
(c) dissipate sound energy in cochlea
(d) amplify sound vibrations

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The portion of the inner ear responsible for hearing is the

(a) utricle
(b) semicircular canals
(c) cochlea
(d) vestibule

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Otoliths are found in the

(a) cochlea
(b) semicircular ducts
(c) utricle and saccule
(d) tympanic cavity

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The structure that transmits sound vibrations from the tympanic membrane to the oval window is the

(a) malleus, incus, stapes chain
(b) round window
(c) vestibular duct
(d) auditory tube

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(a) malleus, incus, stapes chain

High-frequency sounds stimulate hair cells

(a) near the helicotrema
(b) at the apex of the cochlea
(c) at the base of the cochlea
(d) evenly throughout the cochlea

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The five primary taste sensations include all except

(a) sweet
(b) bitter
(c) salty
(d) spicy

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(d) spicy

Taste buds occur primarily in

(a) filiform papillae
(b) fungiform and circumvallate papillae
(c) the uvula only
(d) the tonsils only

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(b) fungiform and circumvallate papillae

The sense of smell is called

(a) gustation
(b) olfaction
(c) nociception
(d) proprioception

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(b) olfaction

Aqueous humor drains via the (a) nasolacrimal duct (b) scleral venous sinus (c) optic disc (d) choroid

(b) scleral venous sinus

Which CN transmits auditory information? (a) CN II (b) CN V (c) CN VIII (d) CN IX

Which portion of the ear contains the ossicles? (a) Outer ear (b) Middle ear (c) Inner ear (d) Auditory canal

(b) Middle ear

The vestibulocochlear nerve carries (a) taste and smell (b) vision and equilibrium (c) hearing and equilibrium (d) pain and temperature

Sensorineural deafness may result from damage to the (a) tympanic membrane (b) ossicles (c) cochlea or auditory nerve (d) external auditory canal

The ossicle attached directly to the tympanic membrane is the (a) stapes (b) incus (c) malleus (d) sacculus

The tympanic membrane separates the (a) external ear and middle ear (b) middle ear and inner ear (c) cochlea and vestibule (d) semicircular canals and vestibule

(a) external ear and middle ear

The stapes transmits vibrations to the (a) round window (b) oval window (c) helicotrema (d) basilar membrane

(b) oval window

The receptor organs for dynamic equilibrium are the (a) maculae (b) spiral organs (c) cristae ampullares (d) cochlear hair cells

The dissolution medium for taste molecules is (a) cerebrospinal fluid (b) aqueous humor (c) saliva (d) endolymph

The receptor organs for static equilibrium are located in the (a) semicircular canals (b) utricle and saccule (c) cochlea (d) scala tympani

(b) utricle and saccule

Movement of the endolymph in the semicircular ducts signals (a) linear acceleration (b) rotational movement (c) sound frequency (d) static posture

(b) rotational movement

Olfactory receptor cells are best classified as (a) mechanoreceptors (b) chemoreceptors (c) photoreceptors (d) nociceptors

(b) chemoreceptors

Which of the following cranial nerves does not carry taste information? (a) Facial (b) Glossopharyngeal (c) Vagus (d) Oculomotor

(d) Oculomotor

Which taste sensation detects amino acids such as glutamate? (a) Sweet (b) Salty (c) Bitter (d) Umami

(d) Umami

The vitreous humor functions to (a) nourish the cornea (b) maintain intraocular pressure (c) equalize ear pressure (d) drain into the nasal cavity

(b) maintain intraocular pressure

Constriction of the pupil is due to contraction of the (a) dilator pupillae (b) sphincter pupillae (c) ciliary muscle (d) levator palpebrae

(b) sphincter pupillae

The medial rectus muscle is innervated by (a) CN II (b) CN III (c) CN IV (d) CN VI

(b) CN III

The optic chiasma is the location where (a) rods convert vitamin A (b) ganglion cells synapse (c) optic nerves partially cross (d) color is processed

Information from the optic tracts is relayed to the (a) hippocampus (b) thalamus (c) cerebellum (d) pons

(b) thalamus

The superior oblique muscle is innervated by (a) CN IV (b) CN III (c) CN VI (d) CN II

(b) CN III

The lateral rectus muscle is innervated by (a) CN IV (b) CN III (c) CN VI (d) CN V

Which cells in the retina synapse directly with ganglion cells? (a) Rods (b) Cones (c) Bipolar cells (d) Amacrine cells

Chapter 15 (Lecture) Flashcards

(47 cards)