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1
Changes in pressure or movement stimulate
A)pain receptors
B)mechanoreceptors
C)photoreceptors
D)chemoreceptors
2
The manner in which an impulse from a sense receptor is perceived depends upon the
A)area of the brain stimulated
B)type of receptor activated
C)speed at which the impulse travels
D)context within which the impulse is generated
3
Sensory receptors for all of the following adapt to repeated stimulation by sending fewer and fewer impulses, except those for
A)heat
B)light
C)pain
D)touch
4
Receptors for the somatic senses are located in the
A)skin
B)muscles
C)joints
D)all of these
5
Meissner's corpuscles and Pacinian corpuscles are sensitive to
A)touch and pressure
B)pain
C)heat
D)light
6
Which of the following events will elicit pain from visceral organs?
A)exposure of normal tissue to strongly alkaline substances
B)cutting into the viscera
C)stretching or spasm of visceral smooth muscle
D)burning as in electrocautery
7
Which of the following is true of acute pain?
A)impulses are carried on thin, myelinated fibers
B)pain is diffuse and difficult to localize
C)pain sensations persist after receptor is no longer stimulated
D)the pain sensation is described as aching or dull
8
Which of the following areas of the brain regulates the detection of pain impulses?
A)midbrain
B)medulla
C)pons
D)thalamus
9
The receptors for taste and smell are examples of
A)mechanoreceptors
B)chemoreceptors
C)thermoreceptors
D)somatic receptors
10
Olfactory receptors are located on the
A)nasopharynx
B)walls of the nares
C)superior nasal conchae
D)lateral wall of the nostril
11
The most sensitive part of a taste bud is the
A)taste cell
B)taste pore
C)taste hair
D)taste cell membrane
12
Saliva enhances the taste of food by
A)increasing the motility of taste receptors
B)dissolving the chemicals that cause taste
C)releasing taste factors by partially digesting food
D)capturing and dissolving the gases of odors of food
13
The primary taste sensations are
A)sweet and sour
B)salt
C)bitter
D)all of the above
14
The function of the small bones of the middle ear is to
A)provide a framework for the tympanic membrane
B)protect the structures of the inner ear
C)support the structure of the tympanic cavity
D)transmits and intensifies the vibrations transmitted to the inner ear
15
The ossicle that sits in the oval window is the
A)stapes
B)malleus
C)incus
D)incubus
16
Hearing receptor cells are located on the
A)organ of Corti
B)scala vestibuli
C)scala tympani
D)round window
17
The two types of equilibrium are
A)vertical equilibrium
B)circular equilibrium
C)both
D)neither
18
The structure that detects motion of the head is the
A)macula
B)semicircular canals
C)vestibule
D)utricle
19
The sensory organ of the semicircular canals is the
A)crista ampullaris
B)macula
C)endolymph
D)cerebellum
20
The muscle that raises the eyelid is the
A)orbicularis oculi
B)superior rectus
C)levator palpebrae superioris
D)ciliary muscle
21
The superior rectus muscle causes the eye to rotate
A)upward
B)toward the midline
C)away from the midline
D)downward and away from the midline
22
The innervation of the lateral rectus muscle is the
A)oculomotor nerve
B)facial nerve
C)abducens nerve
D)trochlear nerve
23
The transparency of the cornea is due to
A)the nature of the cytoplasm in the cells of the cornea
B)the small number of cells and the lack of blood vessels
C)a lack of nuclei within the cells of the cornea
D)keratinization of cells in the cornea
24
The shape of the lens changing as the eye focuses on a close object is a process known as
A)accommodation
B)refraction
C)reflection
D)strabismus
25
The region of the retina associated with the sharpest vision is the
A)macula lutea
B)fovea centralis
C)optic disk
D)choroid coat
26
The maintenance of the shape of the eyeball is enabled by the
A)sclera
B)middle tunic
C)cornea
D)vitreous humor
27
Which of the following pairs is not correct?
A)colorless vision - rods
B)fovea centralis - cones
C)cones - rhodopsin
D)sharp images - cones
28
The process that leads to perception of the sensation arising from the location of the stimulation is projection.
A)True
B)False
29
There are separate receptors of heat and cold.
A)True
B)False
30
The brain and spinal cord are richly supplied with pain receptors.
A)True
B)False
31
Pain arising in the heart may be felt in the left shoulder because the impulses from the skin and viscera may share common neural pathways.
A)True
B)False
32
Serotonin participates in the suppression of pain impulses by stimulating the release of enkephalins.
A)True
B)False
33
The cilia of olfactory receptor cells detect the gases that give rise to odors.
A)True
B)False
34
Some impulses from the olfactory bulbs are sent to neurons of the limbic system.
A)True
B)False
35
The structures of the ear are responsible for the sense of balance or equilibrium as well as the sense of hearing.
A)True
B)False
36
The air-filled space in the temporal bone is called the tympanic cavity.
A)True
B)False
37
Vibration of the ossicles moves the air within the inner ear.
A)True
B)False
38
Sounds of different frequencies are detected because the hearing receptors in hair cells are sensitive to deformation by different sound frequencies.
A)True
B)False
39
Hearing receptor cells are epithelial cells but function like neurons in that they transmit impulses.
A)True
B)False
40
Hearing impulses are transmitted along the vestibular branch of the vestibulocochlear nerve to the auditory cortex of the temporal lobe.
A)True
B)False





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