Unit G

Each eye has ______ lacrimal puncta. 2 4 1 3

2

The diameter of a normal eye is about ______ in diameter. 3 inches 2.5 centimeters 5 centimeters 5 inches

2.5 centimeters

What is the function of the auditory ossicles? Vibrate the tympanic membrane Amplify sound Funnel sound into the ear canal

Amplify sound

Select all that apply Which of the following are semicircular canals? Anterior Medial Posterior Horizontal

Anterior Posterior Horizontal

What chamber is between the iris and cornea? Posterior chamber Anterior chamber

Anterior chamber

What type of fluid is found in the anterior cavity? Multiple choice question. Vitreous humor Blood Aqueous humor

Aqueous humor

Which is true of the cornea? Avascular Opaque Vascular

Avascular

Where is the cochlea located? External ear Middle ear Inner ear

Inner ear

What structure is the dividing line between the anterior and posterior chambers? Iris Cornea Retina

Iris

What structure focuses incoming light onto the retina? Pupil Suspensory ligaments Lens

Lens

What structure creates the "blind spot"? Optic disc Fovea centralis Macula lutea

Optic disc

Select all that apply Which of the following are correct names for the tube that connects the middle ear to the nasopharynx? Pharyngotympanic tube Eustachian tube Auditory tube External auditory canal

Pharyngotympanic tube Eustachian tube Auditory tube

Which layer of the retina provides vitamin A for the photoreceptor cells? Pigmented layer Neural layer

Pigmented layer

What is the space behind the lens called? Posterior cavity Corneal chamber Aqueous cavity

Posterior cavity

What structure is the "white" of the eye? Sclera Conjunctiva Choroid Cornea Iris

Sclera

True or false: The primary purpose of the eyebrows is to keep sweat out of the eyes. True False

True

What is another name for the ear drum? Auricle Stapes External acoustic meatus Tympanic membrane

Tympanic membrane

Select all that apply What structures make up the vestibule? Utricle Cochlea Semicircular canals Saccule

Utricle Semicircular canals Saccule

Select all that apply What structures make up the vestibule? Utricle Semicircular canals Cochlea Saccule

Utricle Semicircular canals Saccule

Which layer of the eye contains the blood and lymph vessels? Vascular tunic Retina Fibrous tunic

Vascular tunic

The tympanic cavity is filled with ______. aqueous humor vitreous humor air perilymph endolymph

air

Sound waves are funneled into the ear by the ______. tympanic membrane auricle ossicles

auricle

The cartilaginous portion of the external ear is called the ______. incus auricle external acoustic meatus tympanic membrane

auricle

The spiral organ rests on the ______. basilar membrane tectorial membrane

basilar membrane

Earwax is a combination of dead skin cells and ______. sweat cerumen sebum

cerumen

CN VIII has two divisions, the ______ branch and the ______ branch. cochlea, tympanic cochlear, vestibular vestibular, tonic In any order static, dynamic

cochlear, vestibular

The nasolacrimal duct is found on the ______ side of the nose. medial lateral

lateral

The suspensory ligaments connect the ______ to the ciliary muscles. lens sclera retina cornea

lens

The lacrimal caruncle is located at the ______ surface of the eye. medial inferior lateral superior

medial

Accommodation is the process of making the lens ______. less spherical more spherical

more spherical

Stapedius is the name of a ______. muscle bone nerve

muscle

The fat surrounding the eye is called ______ fat. orbital olfactory otic gustatory

orbital

The lacrimal gland is made of two parts, the palpebral part and the ______ part. olfactory inferior orbital

orbital

Vibration of the tympanic membrane causes movement of the ______. vestibule auricle ossicles

ossicles

The eyelids are also called ______. cilia eyebrows palpebrae serosa

palpebrae

The portion of the conjunctiva on the inside of the eyelid is called the ______. palpebral conjunctiva ocular conjunctiva conjunctival fornix

palpebral conjunctiva

Accommodation is controlled by the ______ division of the nervous system. sympathetic parasympathetic

parasympathetic

The ______ ligaments connect the ciliary body to the lens. suspensory ciliary patellar

suspensory

The inner ear is located in the ______ bone. parietal occipital temporal frontal

temporal

What substance produced in the external ear impedes microorganism growth? Sebum Apocrine Mucous Cerumen

Cerumen

What causes Trachoma, a type of conjunctivitis? Syphilis Gonorrhea Chlamydia

Chlamydia

What is the largest structure of the vascular tunic? Ciliary body Choroid Iris

Choroid

What structure is filled with pigment from melanocytes? Choroid Pupil Ciliary body Cornea

Choroid

What structure supplies nourishment to the retina? Ciliary body Choroid Iris Sclera

Choroid

What is the name of the "snail-shaped" structure? Saccule Utricle Vestibule Cochlea

Cochlea

Which are activated by high-intensity light? Rods Cones

Cones

Select all that apply Which of the following are a part of the fibrous tunic? Cornea Sclera Iris

Cornea Sclera

Which of the following are functions of the inner ear? Taste Hearing Memory

Hearing

Select all that apply Which of the following are semicircular canals? Medial Horizontal Posterior Anterior

Horizontal Posterior Anterior

Where are the photoreceptors located? In the neural layer of the retina In the neural layer of the choroid In the pigmented layer of the iris In the pigmented layer of the choroid

In the neural layer of the retina

Where are the photoreceptors located? In the pigmented layer of the iris In the neural layer of the choroid In the pigmented layer of the choroid In the neural layer of the retina

In the neural layer of the retina

Select all that apply Which are true of the conjunctiva? It contains goblet cells. It does not cover the cornea. It does not contain nerve endings. It is vascular.

It contains goblet cells. It does not cover the cornea. It is vascular.

What structure makes up the posterior portion of the fibrous tunic? Sclera Iris Cornea

Sclera

What type of muscle is found in the iris? Skeletal Smooth Cardiac Corneal

Smooth

Which auditory ossicle contacts the oval window? Incus Malleous Stapes

Stapes

Where is the lacrimal gland located? Inferior and medial to the eye Inferior and lateral to the eye Superior and medial to the eye Superior and lateral to the eye

Superior and lateral to the eye

Which membrane is gelatinous? Basilar membrane Tectorial membrane

Tectorial membrane

Which membrane is gelatinous? Tectorial membrane Basilar membrane

Tectorial membrane

Select all that apply Which of the following muscles are located within the middle ear? Tensor tympani Stapedius Ossicles

Tensor tympani Stapedius

Which of the following muscles are located within the middle ear? Ossicles Tensor tympani Stapedius

Tensor tympani Stapedius

Which of the following are true of rods? They discriminate between colors. They provide crisp, focused vision. They are concentrated at the visual axis of the eye, near the center of the retina. They function well in dim light.

They function well in dim light.

Pink eye is also called ______. astigmatism conjunctivitis cataracts glaucoma

conjunctivitis

The sphincter pupillae ______ the pupil. constricts dilates

constricts

The limbus is the junction between the sclera and ______. retina choroid iris cornea

cornea

The optic disc is associated with ______. cranial nerve I cranial nerve III cranial nerve IV cranial nerve II

cranial nerve II

The primary function of the ______ is to prevent large objects from contacting the eye. eyelashes eyebrows tarsal glands

eyelashes

The highest proportion of cones is found in the ______. macula lutea fovea centralis blind spot iris

fovea centralis

The sclera ______. allows light to enter the eye is made of dense connective tissue is made of loose connective tissue

is made of dense connective tissue

The nasolacrimal duct is found on the ______ side of the nose. lateral medial

lateral

The lacrimal caruncle is on the ______ side of the eye. superior lateral medial

medial

Aqueous humor is secreted into the ______ chamber before traveling to the ______ chamber of the eye. anterior, posterior posterior, anterior

posterior, anterior

As tears drain through the lacrimal caruncle they enter small holes called the lacrimal ______. pores puncta duct

puncta

The ______, the black hole in the eye, is surrounded by the colorful ______. pupil, iris iris, pupil

pupil, iris

The ciliary muscles are made of ______. skeletal muscle smooth muscle cardiac muscle

smooth muscle

The semicircular canals are continuous with the _____. saccule utricle cochlea

utricle

Where are tears created? Lacrimal caruncle Lacrimal canaliculus Lacrimal puncta Lacrimal apparatus

Lacrimal apparatus

What structure focuses incoming light onto the retina? Suspensory ligaments Lens Pupil

Lens

Ciliary glands are found in the ______. ciliary bodies lacrimal caruncle lateral palpebral commissures tarsal glands

lacrimal caruncle

In the eye, the ______ humor is gelatinous. vitreous aqueous

vitreous

The sphincter pupillae is controlled by the ______ division of the nervous system. sympathetic parasympathetic

parasympathetic

What is the outermost layer of the neural layer of the eye? Layer of photoreceptor cells Layer of ganglion cells Layer of bipolar cells

Layer of photoreceptor cells

Cranial nerve VIII innervates the ______. inner ear external ear middle ear

inner ear

The vestibule contains two structures, the utricle and ______. tympanic membrane saccule ossicles

saccule

Tarsal glands are ______. eccrine glands sebaceous glands apocrine glands

sebaceous glands