BIO 122 Special Senses

The response of receptors to differentiations sound frequencies: a) takes place in the cochlea b) depends upon response of certain portions of the basilar membrane to different frequencies c) takes place as certain hair cells are affected by particular frequencies d) all the above

All the above

A person with normal vision is driving down the road, looking far ahead. If they glance down to read the speedometer, the lens of the eye will: a) become flattened b) become more rounded c) accommodate d) A and C e) B and C

B and C

Accommodations involves:

Curvature of lens and ciliary muscles

Color blindness:

Deficiency of photoreceptors

Which of the following is true of photoreceptors?

There are 3 types of color sensitive receptors: red, green, blue

T/F: It is possible to be "deaf" for only certain frequencies

True

Anatomical sequence of the ear.

Tympanic membrane - malleus - incus - stapes - oval window - round window

The sensory receptors that contain otoliths and that are primarily concerned with recognition of head position relative to gravity are located in the: a) semicircular canals b) sensory cortex c) utricle and saccule d) organ of Corti

Utricle and Saccule

What structure equalizes the pressure between the middle ear and outer atmosphere? a) scala vestibuli b) cochlear duct c) auditory tube d) tympanic membrance

auditory tube

Before and odorant can be detected, is must: a) bind to receptors in the olfactory dendrites b) be transported to the olfactory bulbs c) apply pressure to the olfactory epithelium d) contact a supporting cell

bind to receptors in olfactory dendrites

The individual receptors of taste: a) are of three different types, each of which is evenly distributed on the surface of the tongue b) can respond to a variety of chemicals c) are actually one located in the nasal passages d) are restricted to the tongue

can respond to a variety of chemicals

Vision impairment due to an opaque lens is known as: a) cataracts b) astigmatism c) glaucoma d) presbyopia

cataracts

When the auditory receptors are stimulated, the resulting action potential is transmitted through the: a) cochlear portion of the vestibulocochlear nerve b) cranial nerve II c) vestibular portion of the vestibulocochlear nerve d) tympanic membrane

cochlear portion of the vestibulocochlear nerve

The rod shaped receptor cells of the eye: a. contain rhodopsin b) are responsible for acuity of vision c) indicate color d) are found mainly in the central portion of the retina

contain rhodopsin

Discrimination of specific tastes and odors is believed to be due, at least in part to: a) different firing patterns of groups of receptors cells in response to different chemicals b) difference in the neurotransmitters releaser from the receptor cells c) many receptors, each of which responds to a single chemical d) the suppression of specific receptors from firing

different firing patterns of groups of receptor cells in response to different chemicals

Dim light situations would result in: a) increased cone sensitivity b) the breakdown of rhodopsin c) dilation of the pupil d) constriction of the pupil

dilation of the pupil

The __ fills the membranous labyrinth a) interstitial fluid b) perilymph c) endolymph d) CSF e) plasma

endolymph

Hyperopia:

focal point is posterior to the retina

The sense of taste is also known as: a) interoreceception b) equilibrium c) olfaction d) gustation e) proprioception

gustation

The chemoreceptors of gustatory cells are: a) located only on the tongue b) gustatory (taste) hair c)taste buds d) are most sensitive when the most is dry

gustatory taste hairs

Which of the following conditions can be corrected by a convex lens, that will shift the focal point anteriorly? a) myopia b) astigmatism c) cataract d) hyperopia

hyperopia

The hair cells that convert sound into nervous impulses are found: a) In the semicircular canals b) on the tympanic membrane c) in the organ of corti d) on the malleus

in the organ of corti

Receptors for the senses of equilibrium and hearing are located in the: a) internal ear b) organ of cortisones c) membranous lymph d) perilymph e) middle ear

internal ear

Daytime vision: a) involves mostly cones, rather than rods b) is possible due to an excitatory impulse generated when light contacts the photosensitive chemical rhodopsin c) involves mostly rods d) a & b

involves mostly cones rather than rods

The condition in which the image is formed in front fo the retina is called: a) cataract b) myopia c) astigmatism d) hyperopia

myopia

The olfactory organ consists of the __ and the lamina propria a) olfactory bulb b) cribifriform plate c) olfactory tract d) olfactory nerve e) olfactory epithelium

olfactory epithelium

The function of gustatory receptors in most similar to the function of: a) light receptors in the eye b) mechanoreceptors in the ear c) olfactory receptors d) lamellate corpuscles

olfactory receptors

Which of the following is not one of the six primary taste sensations? a) salty b) peppery c) sweet d) umami e) sour

peppery

Which of the following is directly responsible for converting sound into nerve impulses? a) tympanic membrane b) tectorial membrane c) receptor cells in the organ of Corti d) cochlear fluid

receptor cells in the organ of Corti

Special cells or nerve endings which convert various forms of energy from the environment into action potentials are: a) interneurons b) glial cells c) receptors d) efferent neurons

receptors

Correct order of structures involved in sensing and transmitting light

retina - optic nerve - thalamus - visual cortex

That structure involved in sensing changes in angular acceleration of the head is the: a) saccule b) semicircular canal c) utricle d) a and c only

semicircular canal

Which eye muscle moves the eyeball down and laterally? a) medial rectus b) superior rectus c) superior clique d) none of the above

superior oblique

What structure overlies the spiral organ (organ of Corti)? a) basilar membrane b) stapedius c) endolymph d) tectorial membrane e) perilymph

tectorial membrane

The ossicles in the ear function to: a) stimulate the tympanic membrane b) transfer sound waves from the outer ear to the inner ear c) equalize pressure in the inner ear d) initiate action potentials in response to sound waves

transfer sound waves from the outer ear to the inner ear

The external acoustic meatus ends at the: a) tympanic membrane b) cochlea c) utricle d) pharynx e) auditory tube

tympanic membrane

The __ conveys information about head position with respect to gravity. a) cochlea b) utricle c) ampulla d) saccule e) utricle and saccule

utricle and saccule

Perception of the frequency of a sound depends on: a) the movement of perilymph in cochlear duct b) frequency of stereo cilia c) number of hair cells stimulated d) which part of the cochlear duct is stimulated e) the frequency of vibration of the tectorial membrane

which part of the cochlear duct is stimulated