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54 Cards in this Set
- Front
- Back
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Which of these statements about the afferent division of the nervous system is true?
It descends with sensory information. It ascends with motor information. It ascends with sensory information. It descends with motor information. |
It ascends with sensory information.
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Which of these is not a property of phasic receptors?
They are fast-adapting. They are good for sensing vibration. They are sensitive to stimulus changes. They are always active |
They are always active
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Central adaptation can be defined as __________.
inhibition of the tonic receptors decline in receptor sensitivity inhibition along a sensory pathway a property of tonic receptors |
inhibition along a sensory pathway
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Which of these is a general sense?
proprioception temperature pain All of these are general senses. |
All of these are general senses.
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Which of these is not a property of thermoreceptors?
A. They have free nerve endings. B. They are found within the dermis. C. The "cold" and "warm" receptors are structurally indistinguishable. D. They are slow-adapting. |
D. They are slow-adapting.
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Which of these is not a property of fast pain?
It is also called prickly pain. It is fast-adapting. It is carried by myelinated fibers. It is sensitive to mechanical tissue injury. |
It is fast-adapting.
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A receptor that contains many mechanically-gated ion channels would function best as a __________.
proprioceptor tactile receptor baroreceptor It would function well as any of these receptors. |
It would function well as any of these receptors.
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Which of these is not a property of chemoreceptors?
They trigger visceral reflexes. They are interoceptors. They are classed as nociceptors. They are found in carotid bodies. |
They are classed as nociceptors.
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Which of these is not a type of mechanoreceptor?
proprioceptor nociceptor baroreceptor tactile |
nociceptor
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If a nerve impulse was transmitted to the central nervous system (CNS) on a C fiber, ____________.
it would lead to a quick sensation of pain it would lead to a quick sensation of cold it would lead to a slow sensation of cold it would lead to a slow sensation of pain |
it would lead to a slow sensation of pain
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Which of the following is NOT a component of the spinocerebellar pathway?
The lateral white column of the spinal cord The medulla oblongata The pons The thalamus |
The thalamus
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Which of these sensory pathways carries afferent impulses that don't produce perceptions?
visceral pathways spinothalamic pathway spinocerebellar pathway posterior column pathway |
spinocerebellar pathway
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Proprioceptors signal all but __________
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muscle temp
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Which of these sensory modalities is not carried within the posterior column pathway?
proprioception pressure fine touch pain |
pain
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Which of these is not a property of the somatic nervous system?
A. Has control of cardiac muscle. B. Includes upper motor neurons in the brain. C. Includes lower motor neuron in the brain stem or spinal cord. D. Has control of skeletal muscles. |
A. Has control of cardiac muscle.
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The corticospinal system exerts __________.
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voluntary control over skeletal muscles
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Which of the following is NOT part of the pathway for the sense of smell?
Frontal sinus Cranial nerve pair I Cribriform plate of ethmoid bone Olfactory bulb |
Frontal sinus
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Olfactory glands __________.
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secrete a pigmented mucus
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The first step in the olfactory process is __________.
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an odorant dissolves in the olfactory mucus fluid
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The first step in the process of olfaction is __________.
A. an odorant molecule binding to a specific protein B. sniffing the air C. mucus production D. All of these events occur at the beginning of olfaction. |
an odorant molecule binding to a specific protein
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Which of the following is involved in the gustatory perception of amino acids?
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Umami receptors
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Gustatory receptors are found in __________
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lingual papillae
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Gustatory receptors function most like __________.
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olfactory receptors
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Which two structures make up the outermost fibrous tunic of the eye?
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cornea and sclera
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Which of the following is NOT part of the vascular tunic of the eye?
iris choroid optic disc ciliary body |
optic disc
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The area of the retina that contains the highest concentration of cones is known as the _______.
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fovea
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What is the epithelium that covers the inner surfaces of the eyelids and the outer surface of the eye called?
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conjunctiva
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Which of the following is NOT a structure within the visual axis?
A. lens B. fovea C. suspensory ligaments D. cornea |
C. suspensory ligaments
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Which of the following is found in the optic disc?
Rods and cones Axons of bipolar neurons Choroid Axons of ganglion cells |
Axons of ganglion cells
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Which of these statements regarding the cornea is false?
It is part of the vascular tunic. It is covered by conjunctiva. It is transparent. It refracts light strongly. |
It is part of the vascular tunic.
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The "white" of the eye is part of the __________ tunic.
neural fibrous vascular The "white" of the eye is part of all of these. |
fibrous
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Which of these functions does the vascular tunic serve?
It regulates the amount of light that enters the eye. It controls the shape of the lens. It supports blood vessels and lymphatics. The vascular tunic performs all of these functions. |
The vascular tunic performs all of these functions.
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Which of the following are not properties of the palpebrae?
They protect the eye. They are controlled by cranial nerves. They contain tarsal glands. They comprise the eyebrows. |
they compromise the eyebrows
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The gritty deposit that accumulates in the medial canthus is secreted by the __________.
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lacrimal caruncle
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Bipolar neurons in the retina __________.
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synapse with ganglion cells
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Lacrimal glands ____________.
produce lysozyme moisten the cornea produce a watery secretion Lacrimal glands perform all of these functions. |
Lacrimal glands perform all of these functions.
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Which of these is not one of the three layers of the eye?
vascular tunic scleral tunic neural tunic fibrous tunic |
scleral tunic
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Which of these is the correct pathway for transmission of visual information?
ganglion cell → bipolar cell → photoreceptor photoreceptor → bipolar cell → horizontal cell photoreceptor → bipolar cell → ganglion cell photoreceptor → horizontal cell → ganglion cell |
photoreceptor → bipolar cell → ganglion cell
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The region of the retina that contains only tightly packed cones is the __________.
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fovea
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"An elongated outer segment containing membranous discs that is connected by a thin stalk to the inner segment" best describes __________.
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a photoreceptor
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Retinal, a component of all the visual pigments, is made from __________.
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vitamin A
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Which of these is not a type of photoreceptor?
yellow cone green cone blue cone red cone |
yellow cone
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What is the name for the ear canal?
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external acoustic meatus
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Which of the following structures is NOT part of the middle ear?
cochlea oval window auditory tube auditory ossicles |
cochlea
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Which two structures of the internal ear make up the vestibular complex (which provides the sense of equilibrium)?
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vestibule and semicircular canals
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What would result from inflammation and blockage in the auditory tube?
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Fluid accumulation in the tympanic cavity
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The semicircular canals function
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Generates nerve impulses when the head rotates
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The chain of ossicles begins at the __________ and ends at the __________.
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tympanic membrane; oval window
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A sudden loud noise will reflexively cause the tensor tympani muscle to __________ and cause the stapedius muscle to __________.
relax; relax contract; relax contract; contract relax; contract |
contract; contract
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Relative movement of the __________ in the semicircular canals signals rotation of the head.
endolymph perilymph epilymph paralymph |
endolymph
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Large movements of the __________ will cause large displacements of the __________.
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tympanic membrane; basilar membrane
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Which of these is not a division of the bony labyrinth?
vestibule cochlea auditory ossicles semicircular canals |
auditory ossicles
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The external ear does not include the ___________.
stapes tympanic membrane acoustic meatus pinna |
stapes
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Cochlear hair cells are located in the ___________.
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organ of Corti
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