Question 1

The function of the auditory tube is to

Accepted Answer

A) help maintain equilibrium. 
B) amplify sounds. 
C) equalize air pressure on both sides of the tympanic membrane. 
D) redistribute endolymph after hearing a sound. 
E) provide a passageway for sound waves to enter the ear. 
A) help maintain equilibrium. 
B) amplify sounds. 
C) equalize air pressure on both sides of the tympanic membrane. 
D) redistribute endolymph after hearing a sound. 
E) provide a passageway for sound waves to enter the ear.

Question 2

During accommodation,the ciliary muscle ________ causing the ciliary body to move ________ and apply ________ tension on the lens.

Accepted Answer

A) relaxes; forward; more 
B) contracts; forward; less 
C) contracts; back; more 
D) relaxes; inward; less 
E) contracts; back; less 
A) relaxes; forward; more 
B) contracts; forward; less 
C) contracts; back; more 
D) relaxes; inward; less 
E) contracts; back; less

Question 3

Color blindness is a(n)

Accepted Answer

A) hereditary disease involving a lack of certain cones. 
B) nutritional disease related to a deficiency of vitamin A. 
C) progressive deterioration of the ganglion cells of the retina. 
D) inflammatory reaction causing damage to the photoreceptors. 
E) infection of the retina,resulting in destruction of the cones. 
A) hereditary disease involving a lack of certain cones. 
B) nutritional disease related to a deficiency of vitamin A. 
C) progressive deterioration of the ganglion cells of the retina. 
D) inflammatory reaction causing damage to the photoreceptors. 
E) infection of the retina,resulting in destruction of the cones.

Question 4

Having to adjust to a dark room after walking in from bright light is because

Accepted Answer

A) the breakdown of rhodopsin to opsin occurs slowly. 
B) the lens requires time to accommodate dim light. 
C) rods exposed to strong light need time to regenerate rhodopsin. 
D) rhodopsin does not function in dim light. 
E) only cones function in dim light. 
A) the breakdown of rhodopsin to opsin occurs slowly. 
B) the lens requires time to accommodate dim light. 
C) rods exposed to strong light need time to regenerate rhodopsin. 
D) rhodopsin does not function in dim light. 
E) only cones function in dim light.

Question 5

Which of the following descriptions best matches the term stereocilia?

Accepted Answer

A) move up and down when the stapes moves back and forth 
B) transmit movement of the tympanic membrane to the inner ear 
C) bending these produces receptor potential in hair cells 
D) tiny weights necessary for the static sense of equilibrium 
E) seal the oval window 
A) move up and down when the stapes moves back and forth 
B) transmit movement of the tympanic membrane to the inner ear 
C) bending these produces receptor potential in hair cells 
D) tiny weights necessary for the static sense of equilibrium 
E) seal the oval window

Question 6

The membrane structures that respond to chemical stimuli to produce sweet,bitter,and umami sensations are called

Accepted Answer

A) gustatory hairs. 
B) chemically-gated ion channels. 
C) voltage-regulated ion channels. 
D) G proteins. 
E) papillae. 
A) gustatory hairs. 
B) chemically-gated ion channels. 
C) voltage-regulated ion channels. 
D) G proteins. 
E) papillae.

Question 7

When all three cone populations are stimulated equally,we perceive

Accepted Answer

A) red. 
B) blue. 
C) green. 
D) white. 
E) blackness. 
A) red. 
B) blue. 
C) green. 
D) white. 
E) blackness.

Question 8

The palpebrae are connected at the

Accepted Answer

A) eyelids. 
B) canthus. 
C) lacrimal caruncle. 
D) chalazion. 
E) conjunctiva. 
A) eyelids. 
B) canthus. 
C) lacrimal caruncle. 
D) chalazion. 
E) conjunctiva.

Question 9

Figure 17-1 The Sectional Anatomy of the Eye
Use Figure 17-1 to answer the following questions:
-Identify the structure labeled "12."

Accepted Answer

A) pupil 
B) optic disc 
C) sclera 
D) fovea 
E) retina 
A) pupil 
B) optic disc 
C) sclera 
D) fovea 
E) retina

Question 10

Modified sebaceous glands located along the margin of the eyelid that secrete a lipid-rich product are called ________ glands.

Accepted Answer

A) carpal 
B) mucous 
C) optic 
D) ocular 
E) tarsal 
A) carpal 
B) mucous 
C) optic 
D) ocular 
E) tarsal

Question 11

Which of the following descriptions best matches the term aqueous humor?

Accepted Answer

A) gelatinous fluid that fills anterior chamber 
B) secreted in bright light 
C) excessive production may lead to glaucoma 
D) converts to vitreous humor with age 
E) provides the liquid component of lacrimal secretions 
A) gelatinous fluid that fills anterior chamber 
B) secreted in bright light 
C) excessive production may lead to glaucoma 
D) converts to vitreous humor with age 
E) provides the liquid component of lacrimal secretions

Question 12

The cell of the retina that produces an action potential that goes to the brain is a(n)

Accepted Answer

A) bipolar cell. 
B) photoreceptor. 
C) ganglion cell. 
D) amacrine cell. 
E) horizontal cell. 
A) bipolar cell. 
B) photoreceptor. 
C) ganglion cell. 
D) amacrine cell. 
E) horizontal cell.

Question 13

Which of the following descriptions best matches the term malleus?

Accepted Answer

A) moves up and down when the stapedius muscle contracts 
B) attached to the oval window 
C) bending it produces receptor potential in hair cells 
D) necessary for the static sense of equilibrium 
E) attached to the tympanum 
A) moves up and down when the stapedius muscle contracts 
B) attached to the oval window 
C) bending it produces receptor potential in hair cells 
D) necessary for the static sense of equilibrium 
E) attached to the tympanum

Question 14

Which of the following is a function of tears?

Accepted Answer

A) lubricate the eye 
B) wash away debris 
C) provide oxygen 
D) nourish the cornea and conjunctiva 
E) All of the answers are correct. 
A) lubricate the eye 
B) wash away debris 
C) provide oxygen 
D) nourish the cornea and conjunctiva 
E) All of the answers are correct.

Question 15

The vitreous body

Accepted Answer

A) fills the posterior chamber. 
B) helps to stabilize the eye and holds the retina up against the eyewall. 
C) is replaced at the rate of 20 percent per year until middle age. 
D) circulates through the pupil. 
E) holds the retina against the lens for proper refraction. 
A) fills the posterior chamber. 
B) helps to stabilize the eye and holds the retina up against the eyewall. 
C) is replaced at the rate of 20 percent per year until middle age. 
D) circulates through the pupil. 
E) holds the retina against the lens for proper refraction.

Question 16

Figure 17-1 The Sectional Anatomy of the Eye
Use Figure 17-1 to answer the following questions:
-Identify the structure labeled "7."

Accepted Answer

A) choroid 
B) optic disc 
C) sclera 
D) retina 
E) cornea 
A) choroid 
B) optic disc 
C) sclera 
D) retina 
E) cornea

Question 17

The space between the cornea and the iris is the

Accepted Answer

A) anterior chamber. 
B) posterior chamber. 
C) canal of Schlemm. 
D) aqueous humor. 
E) pupil. 
A) anterior chamber. 
B) posterior chamber. 
C) canal of Schlemm. 
D) aqueous humor. 
E) pupil.

Question 18

A pigment synthesized from vitamin A is

Accepted Answer

A) retinal. 
B) opsin. 
C) rhodopsin. 
D) transducin. 
E) cGMP. 
A) retinal. 
B) opsin. 
C) rhodopsin. 
D) transducin. 
E) cGMP.

Question 19

If your vision is 20/15,this means that you can see

Accepted Answer

A) 20-point type at 15 feet. 
B) objects at 20 feet that individuals with normal eyesight can see at 15 feet. 
C) objects at 15 feet that individuals with eye problems see at 20 feet. 
D) all 15 eye chart letters from 20 feet. 
E) objects that are 20 feet or less away. 
A) 20-point type at 15 feet. 
B) objects at 20 feet that individuals with normal eyesight can see at 15 feet. 
C) objects at 15 feet that individuals with eye problems see at 20 feet. 
D) all 15 eye chart letters from 20 feet. 
E) objects that are 20 feet or less away.

Question 20

The shape of the lens is controlled by the

Accepted Answer

A) pupillary sphincter muscles. 
B) pupillary radial muscles. 
C) ciliary muscles. 
D) iris. 
E) cornea. 
A) pupillary sphincter muscles. 
B) pupillary radial muscles. 
C) ciliary muscles. 
D) iris. 
E) cornea.

Exam 17: The Special Senses

The function of the auditory tube is to

During accommodation,the ciliary muscle ________ causing the ciliary body to move ________ and apply ________ tension on the lens.

Color blindness is a(n)

Having to adjust to a dark room after walking in from bright light is because

Which of the following descriptions best matches the term stereocilia?

The membrane structures that respond to chemical stimuli to produce sweet,bitter,and umami sensations are called

When all three cone populations are stimulated equally,we perceive

The palpebrae are connected at the

Figure 17-1 The Sectional Anatomy of the Eye Use Figure 17-1 to answer the following questions: -Identify the structure labeled "12."

Modified sebaceous glands located along the margin of the eyelid that secrete a lipid-rich product are called ________ glands.

Which of the following descriptions best matches the term aqueous humor?

The cell of the retina that produces an action potential that goes to the brain is a(n)

Which of the following descriptions best matches the term malleus?

Which of the following is a function of tears?

The vitreous body

Figure 17-1 The Sectional Anatomy of the Eye Use Figure 17-1 to answer the following questions: -Identify the structure labeled "7."

The space between the cornea and the iris is the

A pigment synthesized from vitamin A is

If your vision is 20/15,this means that you can see

The shape of the lens is controlled by the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters

During accommodation,the ciliary muscle causing the ciliary body to move and apply tension on the lens.