Deck 17: B: Sense Organs

Question 1

The olfactory tract carries impulses associated with:

A) taste.
B) equilibrium.
C) smell.
D) pain.

Answer 1

C

Question 2

Both olfactory receptors and taste buds are:

A) thermoreceptors.
B) chemoreceptors.
C) nociceptors.
D) mechanoreceptors.

Answer 2

B

Question 3

The auditory ossicles include the:

A) malleus.
B) incus.
C) stapes.
D) All of the above are correct.

Answer 3

D

Question 4

The receptors responsible for sensing crude and persistent touch are the:

A) Meissner corpuscles.
B) Krause end bulbs.
C) Ruffini corpuscles.
D) free nerve endings.

Question 5

Movement of hair cells in the organ of Corti against the _____ membrane can stimulate nerve impulse condition.

A) tectorial
B) basilar
C) vestibular
D) cochlear

Question 6

Which of the following is not a part of the bony labyrinth?

A) Semicircular canal
B) Malleus
C) Vestibule
D) Cochlea

Question 7

Chemoreceptors are most likely to be activated by:

A) cold temperatures.
B) noxious odors.
C) pain.
D) a change of receptor position.

Question 8

Visceroceptors are located in which of the following?

A) Skin
B) Tendons
C) Internal organs
D) Skeletal muscles

Question 9

The number of pure,or "primary," tastes is about:

A) 5.
B) 15.
C) 30.
D) 100.

Question 10

The special senses:

A) are widely distributed throughout the body.
B) enable us to detect pain.
C) are dense in the fingertips.
D) are grouped in the tongue, nose, eyes, and ears.

Question 11

Intense stimuli of any type that results in tissue damage will activate:

A) mechanoreceptors.
B) thermoreceptors.
C) nociceptors.
D) photoreceptors.

Question 12

The somatic senses enable us to detect sensations,including:

A) touch.
B) temperature.
C) pain.
D) all of the above.

Question 13

The organ of Corti is located in the:

A) vestibule.
B) semicircular canal.
C) scala vestibuli.
D) cochlear duct.

Question 14

Which of the following receptors are found in most body tissues?

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

Question 15

All of the following are "primary" taste sensations except:

A) sweet.
B) sour.
C) spicy.
D) bitter.

Question 16

Pacinian corpuscles are least numerous in the:

A) palms of the hands.
B) joints of the body.
C) skin of the back.
D) soles of the feet.

Question 17

Pain that is perceived as being superficial but actually is caused by an underlying organ is called _____ pain.

A) phantom
B) referred
C) chronic
D) acute

Question 18

There are _____ openings into the middle ear.

A) two
B) three
C) four
D) five

Question 19

Free nerve endings respond to all of the following stimuli except:

A) tickling.
B) itching.
C) strength of muscle contractions.
D) pain.

Question 20

Which of the following is true of proprioceptors?

A) Function in relation to movement and position
B) Are superficial receptors
C) Are internal receptors
D) Are receptors for general senses such as touch, pressure, heat, and cold

Question 21

The function of the lacrimal apparatus is to:

A) secrete aqueous humor.
B) secrete vitreous humor.
C) drain aqueous humor.
D) secrete tears.

Question 22

The major function of the utricle and saccule in the vestibule is:

A) transmitting sound waves through bones.
B) changing sound waves into nerve impulses.
C) detecting the position of the head.
D) conducting sound waves through endolymph.

Question 23

Blood vessels are found in which of the following parts of the eye?

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

Question 24

Which of the following structures is not a component of the external ear?

A) Auricle
B) Cerumen-secreting glands
C) Eustachian tube
D) External auditory meatus

Question 25

The inability to focus the lens properly as we age is called:

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

Question 26

The sense organs responsible for static equilibrium are located in the:

A) utricle.
B) saccule.
C) semicircular canals.
D) Both A and B are correct.

Question 27

There are how many types of cones in the retina?

A) 1
B) 2
C) 3
D) 4

Question 28

Which of the following is a primary photopigment?

A) Green
B) Orange
C) White
D) Purple

Question 29

To produce a clear image,the aqueous humor is involved in the process of:

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

Question 30

The semicircular canals are in _____ planes of the body.

A) two
B) three
C) four
D) five

Question 31

Strabismus is a problem related to:

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

Question 32

Which of the following is a true statement?

A) Cones are more numerous than rods.
B) Cones are most densely concentrated in the fovea centralis.
C) Rods are most densely concentrated in the macula lutea.
D) Cones increase in density toward the periphery of the retina.

Question 33

The part of the eye containing nervous tissue is the:

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

Question 34

The white of the eye is referred to as the:

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

Question 35

Which is not true of nearsightedness?

A) Light rays converge in front of the retina.
B) The eyeball may be too long.
C) Convex glasses are used for correction.
D) If uncorrected, the image is blurred.

Question 36

Presbyopia is a condition resulting from:

A) excessive aqueous humor.
B) opacity of the lens.
C) loss of lens elasticity.
D) irregular curvature of the cornea.

Question 37

The tympanic membrane:

A) leads from the auricle into the temporal bone.
B) surrounds the cochlea and the semicircular canals.
C) is continuous with the external auditory meatus.
D) is also known as the inner ear.

Question 38

Which of the following must happen for near vision to occur?

A) Increased tension of the suspensory ligament
B) Relaxation of the ciliary muscle
C) Increased curvature of the lens
D) Contraction of the superior rectus muscle

Question 39

Impulses are transmitted from the inner ear to the brainstem by way of the _____ nerve.

A) vestibular
B) cochlear
C) tectorial
D) oculomotor

Question 40

Irregular curvature of the cornea can produce:

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

Question 41

The two general classes of sense organs are:

A) auditory and visual.
B) peripheral and central.
C) general and special.
D) chemoreceptors and mechanoreceptors.

Question 42

Which of the following structures is concerned with hearing?

A) Utricle
B) Saccule
C) Semicircular canals
D) Cochlear duct

Question 43

Sensory impulses ending in what part of the central nervous system may affect the so-called "vital sign" reflexes?

A) Thalamus
B) Cerebellum
C) Brainstem
D) Cerebral cortex

Question 44

Proprioceptors can be found in:

A) the urinary bladder.
B) major blood vessels of the body.
C) skeletal muscles.
D) both A and C.

Question 45

When referring to the sensory neurons,the term end organ refers to the _____ lobe of the brain.

A) occipital
B) temporal
C) parietal
D) None of the above are correct.

Question 46

Sensory impulses ending in what part of the central nervous system give specific awareness of a specific type of sensation,its exact location,and its level of intensity?

A) Thalamus
B) Cerebellum
C) Brainstem
D) Cerebral cortex

Question 47

Sensory impulses ending in what part of the central nervous system trigger imprecise or "crude" sensation awareness?

A) Thalamus
B) Cerebellum
C) Brainstem
D) Cerebral cortex

Question 48

Which of the following is considered a somatic sense?

A) Smell
B) Taste
C) Equilibrium
D) None of the above

Question 49

Which of the following is not a structure of the middle ear?

A) Incus
B) Stapes
C) Auditory tube
D) Vestibule

Question 50

The word "deform" describes the stimulus detected by:

A) chemoreceptors.
B) mechanoreceptors.
C) photoreceptors.
D) thermoreceptors.

Question 51

The eyelids and anterior surface of the eye are lined by the:

A) cornea.
B) iris.
C) lens.
D) conjunctiva.

Question 52

Which structure is not inside the vestibule of the inner ear?

A) Cochlear duct
B) Utricle
C) Saccule
D) All of the above are in the vestibule.

Question 53

Taste buds can be found:

A) in the lining of the mouth.
B) on the soft palate.
C) on the tongue.
D) in all of the above locations.

Question 54

The two-point discrimination test can be used to measure:

A) visual acuity.
B) the ability to determine the location of a sound.
C) the sensitivity of the skin in various parts of the body.
D) the ability to measure the relative temperature of two different objects.

Question 55

Which of the following is true about pain receptors?

A) Alpha fibers respond to chronic pain.
B) Alpha fibers are associated with dull, aching pain.
C) Alpha fibers are associated with sharp, localized pain.
D) Beta fibers are associated with sharp, localized pain.

Question 56

Which of the following is an anatomical variant of a Meissner corpuscle?

A) Krause end bulb
B) Pacinian corpuscle
C) Ruffini corpuscle
D) Both A and C

Question 57

Which of the following is not true of a receptor potential?

A) It follows the all-or-none law.
B) It is a graded response.
C) It occurs when an adequate stimulus acts on a receptor.
D) It can stimulate an action potential in the axon of a sensory neuron.

Question 58

Which of the following tongue papillae do not have taste buds?

A) Fungiform
B) Filiform
C) Foliate
D) All of the above contain taste buds.

Question 59

The passageway leading to the tympanic membrane is the:

A) external auditory meatus.
B) auditory tube.
C) eustachian tube.
D) oval window.

Question 60

Which of the following is not an accessory structure of the eye?

A) Eyebrows
B) Eyelashes
C) The palpebrae
D) All of the above are accessory structures.

Question 61

Cones that are sensitive to light in the blue wavelength wave are referred to as _____ cones.

A) B
B) L
C) S
D) M

Question 62

Which tongue papillae do not contain taste buds but allow us to experience food texture and "feel"?

A) Fungiform papillae
B) Circumvallate papillae
C) Foliate papillae
D) Filiform papillae

Question 63

Which of the following statements is not true of the eye?

A) The anterior cavity is filled with vitreous fluid.
B) The anterior cavity is divided into anterior and posterior chambers.
C) The posterior cavity is larger than the anterior cavity.
D) All of the above statements are true.

Question 64

Which tongue papillae are large,mushroom-shaped bumps found in the anterior two-thirds of the tongue surface?

A) Fungiform papillae
B) Circumvallate papillae
C) Foliate papillae
D) Filiform papillae

Question 65

Which of the following statements is not true of the olfactory receptors?

A) They are chemoreceptors.
B) They are located in an area that is easily stimulated.
C) The sense of smell in humans is less keen than in many other animals.
D) All of the above statements are true.

Question 66

What types of receptors are important in stimulating the thirst center?

A) Mechanoreceptors
B) Osmoreceptors
C) Chemoreceptors
D) Thermoreceptors

Question 67

Of all the papillae on the tongue,which one contains the most taste buds?

A) Fungiform papillae
B) Circumvallate papillae
C) Foliate papillae
D) All papillae contain about the same number of taste buds.

Question 68

The photopigment melanopsin is found in:

A) rods only.
B) cones only.
C) ganglion cells.
D) both rods and cones.

Question 69

Tactile meniscus is another name for the:

A) Meissner corpuscle
B) Pacini corpuscle
C) Golgi receptor
D) Merkel disk

Question 70

Which term is another name for a variant of a Meissner corpuscle called the bulboid corpuscle?

A) Krause end bulb
B) Ruffini corpuscle
C) Pacini corpuscle
D) Root hair plexus

Question 71

Which of the following defines or explains adaptation?

A) The magnitude of a receptor response increases over time to a continuous stimulus.
B) The magnitude of a receptor response decreases over time to a continuous stimulus.
C) The stimulus is sent to the thalamus and redirected to the brainstem.
D) None of the above defines or explains adaptation.

Question 72

If you slammed your finger in a car door,it would stimulate _____ pain fibers.

A) beta
B) alpha
C) visceral
D) both beta and visceral

Question 73

Which large mechanoreceptor,when sectioned,shows thick laminated connective tissue capsules?

A) Krause end bulb
B) Ruffini corpuscle
C) Pacini corpuscle
D) Root hair plexus

Question 74

Place in proper sequence the structures through which sound waves are conducted, starting with the number 1 and ending with 9.
a.1
b.2
c.3
d.4
e.5
f.6
g.7
h.8
i.9
perilymph

Question 75

Which term is another name for a variant of a Meissner corpuscle called the bulbous corpuscle?

A) Krause end bulb
B) Ruffini corpuscle
C) Pacini corpuscle
D) Root hair plexus

Question 76

When you are looking at a large green field,which cones would be sending the green wavelength to the brain?

A) G
B) L
C) S
D) M

Question 77

Which of the following statements is not true about the sense of hearing?

A) The amplitude of the sound wave determines the volume.
B) The frequency of the sound wave determines pitch.
C) High frequency sound waves cause the basilar membrane near the oval window to vibrate.
D) All of the above statements are true.

Question 78

Which tongue papillae are huge dome-shaped bumps that form a transverse row near the back of the tongue?

A) Fungiform papillae
B) Circumvallate papillae
C) Foliate papillae
D) Filiform papillae

Question 79

Which of the following statements is not true of exteroceptors?

A) They send both tonic and phasic impulses to the central nervous system.
B) They are also called cutaneous receptors.
C) They are located on or near the surface of the body.
D) All of the above statements are true of exteroceptors.

Question 80

The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is:

A) malleus, incus, and stapes.
B) malleus, stapes, and incus.
C) stapes, malleus, and incus.
D) stapes, incus, and malleus.