Q. A sensory receptor capable of detecting changes in hydrogen ion concentration is more accurately described as a ______________.
A. thermoreceptor
B. pain receptor
C. mechanoreceptor
D. chemoreceptor
Answer- chemoreceptor
Q. Heavy pressure and vibrations stimulate ________________.
A. proprioceptors
B. baroreceptors
C. Meissner's corpusles
D. Pacinian corpuscles
Answer- Pacinian corpuscles
Q. Choose the statement about the sense of pain that is correct.
A. Pain receptors are among many types of receptors in the viscera that produce sensations.
B. A phenomenon known as referred pain can be explained because of common nerve pathways used by both the skin and internal organs.
C. Acute pain fibers are never myelinated.
D. Chronic pain fibers stop sending signals as soon as the stimulus ceases.
Answer- A phenomenon known as referred pain can be explained because of common nerve pathways used by both the skin and internal organs.
Q. What type of somatic receptor lies within tendons close to the point of attachment to muscles and is stimulated by increased muscular tension?
A. Golgi tendon organ
B. muscle spindle
C. free nerve ending
D. Meissners corpuscle
Answer- Golgi tendon organ
Q. Which of these statements about the sense of smell is not true?
A. Olfactory receptor cells are bipolar neurons that are not replaced when damaged.
B. Chemicals are received by specific plasma membrane receptors in the olfactory receptor cells.
C. Olfactory receptors do not adapt quickly.
D. The main areas of the brain that interpret the sense of smell lie in the temporal and frontal lobes.
Answer- Olfactory receptors do not adapt quickly.
Q. The portion(s) of the tongue that actually perceives taste is/are the _____________.
A. taste hairs
B. papillae
C. epithelium of tongue
D. taste buds
Answer- taste hairs
Q. How do the senses of smell and taste differ?
A. They differ in the types of receptors they employ.
B. They differ in the reproductive rate of the receptors.
C. They differ in their rate of sensory adaptation.
D. They do not both employ cilia or hair-like extension of their receptor cells.
Answer- They differ in the reproductive rate of the receptors.
Q. Why do odors sometimes alter our moods?
A. Because sensory input from olfaction is routed through the limbic system.
B. Because odors act as neurotransmitters and alter brain chemistry.
C. Because odors are satisfying to our sense of hunger.
D. Odors do not alter mood.
Answer- Because sensory input from olfaction is routed through the limbic system.
Q. Loss of the sensation of taste is referred to as _____________.
A. dysosmia
B. ageusia
C. hypogeusia
D. asnosmia
Answer- ageusia
Q. The chamber that actually houses the hearing receptors is the __________________.
A. vestibule
B. semicircular canal
C. scala tympani
D. cochlear duct
Answer- cochlear duct
Q. After the inner ear has perceived sound, the sound is dissipated because ____________.
A. perilymph inside the scala tympani absorbs the sound wave energy
B. endolymph inside the cochlear duct absorbs sound wave energy
C. air inside the middle ear dissipates the sound waves
D. perilymph inside the scala vestibuli absorbs sound wave energy
Answer- air inside the middle ear dissipates the sound waves
Q. The organs of static equilibrium are located within the ______________ and employ shifting ___________ to set up nerve impulses.
A. semicircular canals; gelatinous material
B. vestibule; otoliths
C. cochlea; fluid
D. vestibule; crista ampullaris
Answer- vestibule; otoliths
Q. The inner surface of the eyelids are lined with ______________.
A. conjunctiva
B. extrinsic eye muscles
C. dense connective tissue
D. lacrimal apparatus
Answer- conjunctiva
Q. The region on the retina that produces the sharpest vision is called the _______________.
A. sclera
B. aqueous humor
C. fovea centralis
D. optic disk
Answer- fovea centralis
Q. Objects are perceived by photoreceptors because the rods or cones _______________ as their _________________ in the presence of light.
A. depolarize; pigments are manufactured
B. hyperpolarize; pigments decompose
C. repolarize; pigments remain unchanged
D. depolarize; pigments decompose
Answer- hyperpolarize; pigments decompose
Q. The ability to sense body position is related to _____ receptors.
A. general
B. pain
C. pressure
D. proprioceptors
Answer- proprioceptors
Q. The area of the brain that integrates proprioceptor data is the:
A. cerebrum
B. hypothalamus
C. cerebellum
D. medulla oblongata
Answer- cerebellum
Q. Most olfactory receptors are located on the ______ surface of the nasal cavity.
A. superior
B. inferior
C. lateral
D. medial
Answer- superior
Q. Which muscle moves the eye towards the midline?
A. superior oblique
B. superior rectus
C. medial rectus
D. lateral rectus
Answer- medial rectus
Q. Which extrinsic eye muscle rotates the eyes clockwise?
A. Inferior oblique
B. superior oblique
C. lateral rectus
D. medial rectus
Answer- superior oblique
Q. Which cranial nerve does not innervate eye muscles?
A. III
B. trochlear
C. abducens
D. II
Answer- II
Q. The _____ is a membrane covering the anterior portion of the eyeball.
A. cornea
B. conjunctiva
C. sclera
D. eyelid
Answer- conjunctiva
Q. Which of these is the last in the tear flow sequence?
A. lacrimal duct
B. nasolacrimal duct
C. lacrimal gland
D. lacrimal sac
Answer- nasolacrimal duct
Q. The actual receptors for hearing and balance are the _____.
A. mechanoreceptors
B. otoliths
C. cochlear cells
D. hair cells
Answer- hair cells
Q. The auditory canal is part of the _____.
A. inner ear
B. middle ear
C. outer ear
D. pinna
Answer- outer ear
Q. Which is the last structure to vibrate in this sequence?
A. malleus
B. oval window
C. stapes
D. incus
Answer- oval window
Q. The cerebral cortex functions in sensation and the perception of those sensations.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- TRUE
Q. Sensory receptors are equally and proportionally distributed throughout the skin.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- FALSE
Q. Taste and smell are sensations stimulated by chemical molecules.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- TRUE
Q. The papillae on the tongue respond to sweet, sour, salt and bitter stimuli.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- FALSE
Q. The olfactory cells have microvilli that enable them to respond to chemical stimuli.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- FALSE
Q. The taste buds on the tongue enable a person to perceive the taste of various foods such as the garlic in lasagna.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- FALSE
Q. Free nerve endings in the skin are associated with the sensation of pain.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- TRUE