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