Deck 17: A: Sense Organs

Question 1

Movement of hair cells in the organ of Corti against the cochlear membrane can stimulate nerve impulse conduction.

Answer 1

False

Question 2

Somatic sense receptors located in muscles and joints are called visceroceptors.

Answer 2

False

Question 3

Taste buds are both exteroceptors and chemoreceptors.

Answer 3

True

Question 4

The sense organs associated with the semicircular canals function in static equilibrium.

Question 5

Dynamic equilibrium depends on the functioning of the crista ampullaris.

Question 6

The auditory ossicles include the malleus,incus,and stapes.

Question 7

Olfaction requires the chemical response of a dissolved substance for a stimulus.

Question 8

Touch and pressure are examples of stimuli that activate mechanoreceptors.

Question 9

As we wear our sneakers,we lose the constant feeling of their presence; this is called adaptation.

Question 10

High-frequency sound waves cause the narrow portion of the basilar membrane near the oval window to vibrate.

Question 11

Sensory receptors make it possible for the body to respond to stimuli caused by changes occurring in our external and internal environments.

Question 12

The olfactory receptor cells lie in an excellent position functionally to smell delicate odors.

Question 13

The tip of the tongue reacts best to bitter taste.

Question 14

The transmission pathway for olfactory sensations is olfactory cilia,olfactory bulb,olfactory tract,and cerebral cortex.

Question 15

The tip of the tongue reacts best to a salty taste and,to a lesser extent,to a sweet taste.

Question 16

The eustachian tube connects the inner ear with the trachea.

Question 17

Muscle spindles are stimulated by excessive muscle contraction.

Question 18

The retina is the incomplete innermost coat of the eyeball,in that it has no anterior portion.

Question 19

The posterior cavity of the eye contains aqueous humor.

Question 20

Somatic sense receptors are distributed evenly throughout the body.

Question 21

Usually the closer an object is,the greater the degree of convergence that is necessary to maintain single vision.

Question 22

Color blindness is caused by mistakes in producing three photopigments in the cones.

Question 23

Strabismus is more of a problem with the internal ciliary muscle than with the external muscles.

Question 24

The eye is the only organ in the body in which both voluntary and involuntary muscles are found.

Question 25

Because rhodopsin is less sensitive to light than the cone photopigments,brighter light is necessary for its breakdown.

Question 26

Movement of the eyeball in any desired direction is accomplished by several intrinsic muscles.

Question 27

Rhodopsin is a photopigment present in rods that is used for night vision.

Question 28

Rhodopsin,the photopigment in rods,is less sensitive to light than cone pigments are.

Question 29

Each optic nerve contains fibers from both retinas.

Question 30

Both rods and cones function to produce color vision.

Question 31

Aqueous humor is a gelatinous substance that fills the posterior cavity of the eyeball.

Question 32

You feel hungry because of a proprioceptor.

Question 33

Proprioceptors are receptors for touch,pain,heat,and cold.

Question 34

All muscles of the eye are involuntary.

Question 35

The photo pupil reflex is an accommodation process normally used to see objects that are close.

Question 36

Glaucoma is a disease in which the lens becomes opaque.

Question 37

Refraction means the deflection,or bending,of light rays.

Question 38

Convergence of impulses from cones is common.

Question 39

Three processes focus light rays so that they form a clear image on the retina: refraction of the light rays,constriction of the pupil,and convergence of the eye.

Question 40

Visual acuity is the clearness or sharpness of visual perception.

Question 41

Golgi tendon receptors are stimulated by touch.

Question 42

Olfactory receptors and taste buds are chemoreceptors.

Question 43

Exteroceptors are often called somatic senses.

Question 44

From superficial to deep,the three layers of tissue that compose the eyeball are sclera,choroid,and retina.

Question 45

The white of the eye is called the choroid.

Question 46

Farsightedness,which is often the inability to focus the lens properly as we age,is also called presbyopia.

Question 47

The number of pure,or "primary," olfactory scents is about 15.

Question 48

There are three semicircular canals.

Question 49

Aqueous humor is formed by secretion of the ciliary body into the posterior chamber.

Question 50

Light from red colors causes the breakdown of rhodopsin.

Question 51

Proprioceptors are activated by a change in temperature.

Question 52

The sense organs responsible for the sense of balance are located in the vestibule and cochlea.

Question 53

The tip of the tongue reacts best to sweet taste.

Question 54

Somatic sense receptors located in muscles and joints are called proprioceptors.

Question 55

The correct order of the auditory ossicles deep to the tympanic membrane is malleus,incus,and stapes.

Question 56

Spicy is one of the "primary" taste sensations.

Question 57

Mechanoreceptors are the simplest,most common,and most widely distributed sensory receptors.

Question 58

The canal of Schlemm drains the aqueous humor from the anterior chamber.

Question 59

The function of the lacrimal gland is to secrete tears.

Question 60

The membranous labyrinth is filled with perilymph.

Question 61

The retina is the complete outermost coat of the eyeball.

Question 62

Unlike other neurons,olfactory receptors are replaced on a regular basis.

Question 63

Lamellar corpuscle and Ruffini corpuscle refer to the same structure.

Question 64

A person with 20/100 vision can see objects at 20 feet that a person with normal vision can see at 100 feet.

Question 65

Adaptation by a receptor causes an increase in the rate of impulse but a decrease in its intensity.

Question 66

Referred pain may be caused by deep organ receptors and skin area receptors entering the same segment of the spinal cord.

Question 67

Nociceptors serve as the primary receptor for pain.

Question 68

Nociceptors can respond to intense light.

Question 69

The correct order of the flow of tears is lacrimal gland,lacrimal duct,punctum,lacrimal sac,lacrimal canal,and nasolacrimal duct.

Question 70

Golgi tendon receptors respond in a way similar to muscle spindles to maintain posture.

Question 71

Special sense organs can respond to only one type of stimuli,whereas general sense organs can respond to several different types of stimuli.

Question 72

Anatomically,each muscle spindle consists of a discrete grouping of about 5 to 10 modified muscle fibers called intrafusal fibers.

Question 73

Proprioceptors are specialized types of visceroceptors.

Question 74

The two-point discrimination test measures the visual acuity of the eye.

Question 75

Because of its importance to survival,the brain has a high concentration of pain receptors.

Question 76

The stretch reflex helps maintain posture.

Question 77

Proprioceptors respond to pressure in such organs as the intestine and the urinary bladder.

Question 78

In referring to proprioceptors,the terms tonic and phasic are interchangeable.

Question 79

The opening and separation of opsin and rhodopsin in the presence of light is called bleaching.

Question 80

Proprioceptors in muscles and joints tend to adapt faster than other types of receptors.