Deck 9: The Sensory System

Question 1

Which type of cutaneous receptor would respond to the lightest pressure?

A)Krause end bulbs
B)Ruffini endings
C)Pacinian corpuscles
D)Meissner corpuscles

Answer 1

A

Question 2

Excessive muscle contraction will activate

A)muscle spindles.
B)Golgi tendon organs.
C)Merkel disks.
D)Meissner corpuscles.

Answer 2

B

Question 3

Which type of receptor are proprioceptors,pressure receptors,and equilibrium receptors?

A)Pain receptors
B)Photoreceptors
C)Chemoreceptors
D)Mechanoreceptors

Answer 3

D

Question 4

The response to signals from Golgi tendon organs is to

A)decrease the degree of muscle contraction.
B)decrease the degree of muscle relaxation.
C)increase the degree of muscle contraction.
D)None apply.

Question 5

What type of receptor responds to changes in temperature?

A)Mechanoreceptor
B)Thermoreceptor
C)Photoreceptor
D)Chemoreceptor

Question 6

The feeling of pain on the body surface that has its origin in an internal organ is called

A)nociception.
B)proprioception.
C)referred pain.
D)visceral pain.

Question 7

Proprioceptors are involved in the sense of

A)pain.
B)temperature.
C)pressure.
D)limb position.

Question 8

The response to signals from muscle spindles is to

A)decrease the degree of muscle contraction.
B)increase the degree of muscle relaxation.
C)increase the degree of muscle contraction.
D)decrease the frequency of impulses to muscles.

Question 9

The function of muscle spindles is to detect

A)muscle or tendon stretch.
B)muscle or tendon contraction.
C)muscle or tendon relaxation.
D)None apply.

Question 10

Which of the following cutaneous receptors is NOT sensitive to fine touch?

A)Meissner corpuscles
B)Root hair plexus
C)Pacinian corpuscles
D)Merkel disks

Question 11

Nerve signals from the general body senses travel up the spinal cord to the thalamus and then to the

A)somatosensory area of the parietal lobe.
B)prefrontal area of the frontal lobe.
C)visual area of the occipital lobe.
D)primary motor area of the frontal lobe.

Question 12

Which of the following are examples of chemoreceptors?

A)Taste
B)Olfaction
C)Proprioception
D)Taste and olfaction

Question 13

Sensory receptors can generate action potentials.

Question 14

What type of cutaneous receptor would be the first to respond to a touch that barely contacts the skin of the forearm?

A)Merkel disk
B)Pacinian corpusle
C)Meissner corpuscle
D)Root hair plexus

Question 15

Temperature receptors of the skin are

A)Ruffini endings.
B)Krause end bulbs.
C)free nerve endings
D)Merkel disks.

Question 16

Which of the following cutaneous receptors is NOT correctly matched with its stimulus?

A)Krause end bulbs - pressure
B)Free nerve endings - heat or cold
C)Pacinian corpuscles - fine touch
D)Ruffini endings - pressure

Question 17

The speed of the action potentials generated by a muscle spindle is proportional to the amount of muscle stretch.

Question 18

Information from muscle spindles and Golgi tendon organs are used for

A)maintaining equilibrium and posture.
B)processing pain.
C)registering pressure.
D)registering light touch.

Question 19

Which of the following cutaneous receptors is NOT sensitive to pressure?

A)Ruffini endings
B)Meissner corpuscles
C)Pacinian corpuscles
D)Krause end bulb

Question 20

The signaling system begun by a stimulus is called a(n)

A)action potential.
B)all-or-none response.
C)receptor potential.
D)local potential.

Question 21

The structure that produces tears is called the

A)conjunctiva.
B)lacrimal apparatus.
C)aqueous humor.
D)sclera.

Question 22

What is the purpose of blinking of the eyes?

A)Lubricate the eye surface
B)Protect the eye from infection
C)Remove debris from the eye surface
D)Lubricate and remove debris from eye surface

Question 23

The olfactory receptors are located

A)in the roof of the nasal cavity.
B)on nasal mucosa cilia.
C)in the back of the throat.
D)in the paranasal sinuses.

Question 24

The three pairs of muscles attached to the outside of the eyeball that are used for eye movement are called ____ muscles.

A)intrinsic
B)extrinsic

Question 25

The gustatory (taste)area of the cerebrum is located in the

A)parietal lobe.
B)insula.
C)frontal lobe.
D)parietal lobe and insula.

Question 26

Taste buds are found on structures called lamellae.

Question 27

The conjunctiva covers the cornea.

Question 28

Which of the following is NOT a cranial nerve that innervates the extrinsic eye muscles?

A)Oculomotor
B)Abducens
C)Trigeminal
D)Trochlear

Question 29

Which of the following is INCORRECT about olfaction (smell)?

A)Olfactory cells are modified neurons.
B)Olfactory cilia have receptors for odor molecules.
C)There are 23 primary odors.
D)What we taste is related to what we smell.

Question 30

Which of the following bones is NOT part of the orbit of the eye?

A)Ethmoid
B)Palatine
C)Zygomatic
D)Temporal

Question 31

The mucous membrane that lines the inside of the eyelids is called the

A)conjunctiva.
B)lacrimal apparatus.
C)aqueous humor.
D)sclera.

Question 32

Which of the following is NOT a stimulus that will activate a chemoreceptor?

A)Taste of pizza
B)Carbon dioxide level of the blood
C)Oxygen deprivation in a visceral organ
D)Smell of roses

Question 33

The inferior rectus muscle

A)rolls the eye downward.
B)rotates the eye clockwise.
C)turns the eye inward,toward the midline.
D)rolls the eye upward.

Question 34

The sensory receptors for taste are located in

A)taste buds.
B)salivary glands.
C)the teeth.
D)the cheeks.

Question 35

The superior oblique muscle

A)rolls the eye upward.
B)turns the eye outward,away from the midline.
C)rotates the eye counterclockwise.
D)rotates the eye clockwise.

Question 36

The medial rectus muscle

A)rolls the eye upward.
B)turns the eye outward,away from the midline.
C)turns the eye inward,toward the midline.
D)rotates the eye clockwise.

Question 37

The levator palpebrae superioris muscle will raise the eyebrows.

Question 38

An emotional response to an odor means that the _______ is involved.

A)reticular activating system
B)limbic system
C)somatosensory area
D)cerebrospinal fluid

Question 39

The olfactory area of the cerebrum is located in the

A)insula.
B)parietal lobe.
C)temporal lobe.
D)frontal lobe.

Question 40

Which of the following is NOT a primary taste?

A)Umami
B)Sweet
C)Bitter
D)Minty
E)Salty

Question 41

The posterior compartment of the eye is filled with a clear gel called the

A)aqueous humor.
B)lacrimal secretions.
C)vitreous humor.
D)fovea centralis.

Question 42

The lens is held in place by the

A)retina.
B)cornea.
C)choroids.
D)ciliary body.

Question 43

Which is (are)involved in refraction?

A)lens
B)iris
C)choriod
D)All apply.

Question 44

The place where the optic nerve exits the eye is the

A)lens.
B)blind spot.
C)ciliary body.
D)fovea.

Question 45

What is the area that contains only cones for the most acute vision?

A)Vitreous body
B)Bipolar cell layer
C)Fovea centralis
D)Blind spot

Question 46

Changing the shape of the lens for near and far vision is called

A)refraction.
B)accommodation.
C)convergence.
D)transmutation.

Question 47

Photoreceptors are located in the

A)retina.
B)cornea.
C)choroids.
D)sclera.

Question 48

Protection and support is the function of the ____ of the eye.

A)retina
B)cornea
C)choroid
D)sclera

Question 49

The photopigment rhodopsin is found in

A)rods.
B)cones.

Question 50

The lens of the eye rounds up or bulges

A)for distant vision.
B)for close vision.
C)when a person is frightened.
D)when sleeping.

Question 51

Which of the following is NOT a color pigment found in cones?

A)Red
B)Green
C)Yellow
D)Blue

Question 52

Absorption of stray light rays occurs in the

A)retina.
B)cornea.
C)choroid.
D)sclera.

Question 53

Which of the following is NOT involved in refraction?

A)Cornea
B)Aqueous humor
C)Lens
D)Pupil

Question 54

Changing the shape of the lens to correctly focus light on the retina is called

A)refraction.
B)accommodation.
C)astigmatism.
D)presbyopia.

Question 55

What is the function of the iris?

A)Changes the shape of the lens
B)Absorbs stray light rays
C)Regulates the size of the pupil
D)Refracts light rays

Question 56

The muscle that controls the amount of light that enters the eye through the pupil is the

A)choroids.
B)suspensory ligament.
C)ciliary muscle.
D)iris.

Question 57

Which eye muscle is innervated by the abducens nerve?

A)Lateral rectus muscle
B)Medial rectus muscle
C)Superior oblique muscle
D)Inferior rectus muscle

Question 58

Which of the following is (are)true of the rods?

A)See color
B)Function in dim light
C)Located in the fovea centralis
D)All apply.

Question 59

The cones are most densely packed in the

A)blind spot.
B)vitreous humor.
C)fovea centralis.
D)choroids.

Question 60

The anterior compartment of the eye is filled with a fluid called the

A)aqueous humor.
B)lacrimal secretions.
C)vitreous humor.
D)fovea centralis.

Question 61

Blindness caused by abnormal blood vessel growth in the retina is

A)cataracts.
B)macular degeneration.
C)glaucoma.
D)conjunctivitis.

Question 62

The corrective lens for those with hyperopia is _______,which will bend the light rays more so that they focus on the retina.

A)concave
B)convex

Question 63

The _______ leads from the optic chiasma to the thalamus.

A)optic radiation
B)optic nerve
C)optic tract

Question 64

People who can see far objects better than those that are close have

A)hyperopia.
B)myopia.
C)presbyopia.
D)astigmatism.

Question 65

The external auditory canal is part of the

A)middle ear.
B)outer ear.
C)inner ear.

Question 66

The buildup of pressure due to an increased amount of aqueous humor is known as

A)cataracts.
B)glaucoma.
C)a sty.
D)astigmatism.

Question 67

Nearsightedness is due to a(n)

A)shortened eyeball.
B)elongated eyeball.
C)damaged lens.
D)damaged cornea.

Question 68

The ossicles are part of the

A)middle ear.
B)outer ear.
C)inner ear.

Question 69

Astigmatism is due to a(n)

A)shortened eyeball.
B)elongated eyeball.
C)misshapened cornea or lens.
D)increased pressure inside the eye.

Question 70

The image,╓ is projected onto the retina as ╜.

Question 71

Where does the visual pathway cross so that each optic tract carries impulses from the opposite visual field?

A)Thalamus
B)Optic radiations
C)Optic chiasma
D)Optic nerve

Question 72

Farsightedness is due to a(n)

A)shortened eyeball.
B)elongated eyeball.
C)damaged lens.
D)damaged cornea.

Question 73

The corrective lens for those with myopia is _________,which will diverge the light rays so that they focus on the retina.

A)concave
B)convex

Question 74

Rods and cones are evenly distributed throughout the entire retina.

Question 75

The clouding of the lens is called

A)a cataract.
B)macular degeneration.
C)detached retina.
D)glaucoma.

Question 76

The _______ lead from the eyes to the optic chiasma.

A)optic radiations
B)optic nerves
C)optic tracts

Question 77

People who can see close objects better than those far away have

A)hyperopia.
B)myopia.
C)presbyopia.
D)astigmatism.

Question 78

The cochlea is part of the

A)middle ear.
B)outer ear.
C)inner ear.

Question 79

The _______ leads from the thalamus to the occipital lobe.

A)optic radiation
B)optic nerve
C)optic tract

Question 80

Which of the following is the correct pathway from the retina to the visual cortex?

A)Optic nerve,optic radiations,optic chiasma,ganglion cells,thalamus,optic tract,occipital lobe
B)Optic tract,ganglion cells,optic radiations,thalamus,optic chiasma,optic nerve,temporal lobe
C)Ganglion cells,optic nerve,optic chiasma,optic tract,thalamus,optic radiations,occipital lobe
D)Optic nerve,optic tract,optic chiasma,optic radiations,thalamus,ganglion cells,parietal lobe