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100 terms

Sensory A&P

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Part of sensory pathway that detects a change is:
receptor
Part of sensory pathway that carries impulse to the CNS:
sensory neuron
Part of sensory pathway that consists of white matter in the spinal cord or brain is the:
sensory tract
Part of sensory pathway that feels and interprets the sensation:
sensory areas
Function of sensory receptors is to:
detect change and generate impulse
Most of the sensory areas are located in the cerebral
cortex
Cutaneous receptors for touch and pressure are
encapsulated endings
Cutaneous receptors for pain, itch, heat, and cold:
free nerve endings
Cutaneous receptors are found in what part of the skin:
dermis
Sensory areas for the cutaneous senses are in the what lobes:
parietal
Receptors for muscle sense are called:
Proprioceptors or stretch receptors
Muscle sense depends on the brain creating a:
mental picture
Sensory areas for conscious muscle sense are in the:
Parietal lobes
Unconscious muscle sense is integrated by the
cerebellum
Unconscious muscle sense is used to promote good:
coordination
Chemoreceptors fo the sense of smell detect
vaporized chemicals
Chemoreceptors for the sense of taste detect chemicals dissolved in:
saliva
Receptors for smell and tase have the general name:
chemoreceptors
Cranial nerve pair of the sense of smell is the:
olfactory
Cranial nerve pairs for the sense of taste are the what?
glossopharyngeal and facial
Sensory area for the sense of smell is the what lobe:
temporal
Sensory area for the sense of taste is in the what lobe:
Parietal
Membrane that lines the eyelids are the:
conjunctiva
Layer of eyeball that forms the white part of the eye is:
sclera
Cornea differs from the rest of the sclera in that the cornea is:
transparent
Tears contain what type of glands that produce tears:
lacrimal
Tears contain what that inhibit growth of bacteria:
lyszome
Most anterior part of the sclera of the eye is:
sclera
The layer of the eyeball that absorbs light within the eye to prevent glare is the:
choroid
Bony socket of the eye is called ____________ and it is lined with ____________ to cushion the eyeball.
orbit, fat
Part of the eyeball that contains receptors for vision is the:
retina
Eyeball is moved up and down or side to side by:
Extrinsic muscles
The part of the eye that helps the eyelids keep dust out of the eye:
eyelashes
Size of pupil is regulated by the:
iris
Iris has two sets of muscle fibers that regulate the size of the pupil?
smooth muscle
Part of the eye that contracts to change the shape of lens is the:
ciliary muscles
Anterior cavity of the eye contains _________, and posterior cavity contains __________________
aqueous humor, vitreous humor
Fluid of eye that nourishes the lens and cornea is:
aqueous humor
Part of eye that helps keep the retina in place is the:
vitreous humor
Aqueous humor is reabsorbed back into the blood through the:
canal of schlemm
Function of the canal of schlemm is to reabsorb:
aqueous humor
Photoreceptors in the retina are the:
cones and rodes
Photoreceptors that detect the presence of light are the:
rods
Photoreceptors that detect different wavelegnths or colors of light are the:
cones
In the retina, colors are detected by the ________________ and presence of light is detected by:
cones, rods
Cells of retina that form the optic nerve are the:
ganglion neurons
Ganglion neurons of the retina from the:
optic nerve
Part of retina that contains only cones is the:
fovea
Fovea differs from the rest of the retina b/c there are no what present:
rods
Optic nerve passes through the eyeball at a site called the:
optic disc
Optic disc of the eye is the site of the:
optic nerve
Optic nerve is formed by_____________ neurons and passes through the eyeball at the
ganglion, optic disc
First part of eye that refracts light rays:
cornea
Only part of eye that adjusts to focus light rays is:
lens
Len of eye bulges for near vision when the:
ciliary muscle contracts
Parts of eye that refract light rays, in order, are the:
cornea, aqueous humor, lens, and vitreous humor
chemical that breaks down in rods when light strikes it:
rhodopsin
Vitamin A is necessary for vision for the formation of:
rhodopsin
Cranial nerves pairs for movement of eyebal are the:
oculomotor, trochlear, and abducens
Constriction of the pupils in the bright light and is brought about by impulses carried by what nerves:
oculomotor
Dilation of the pupils is brought on by what nerve impulse:
sympathetic
Visual areas of cerebrum are in what lobes:
Occiptal
Brain creates one image from the slightly different images of the two eyes, is called what:
binocular vision
Receptors for hearing are located in what part of the inner ear:
cochlear
Receptors that detect motion are located in the what part of the inner ear:
semicircular canal
Receptors that respond to gravity are located in what parts of the inner ear:
utricle and saccule
Cochlea has receptors called what what and they are located in:
hair cells, organ of Corti
The semicircular canals are made up of 3 canals and their receptors are called:
hair cells
Utricle and saccule have receptors called________ which are embedded in a gel with crystals called:
hair cellls, otoliths
First part of ear that vibrates in response to sound waves is the:
eardrum
Auditory bones in the order that vibrate:
malleus, incus, and stapes
Sound wave vibrations are transmitted from the middle ear to the inner ear at the junction of the:
stapes with the oval window
Middle ear cavity is filled with ________ and the pressure is regulated by the __________________
air, eustachian tubes
Part of ear that prevents sharp rises in pressure within the cochlea is the:
round window
Malleus transmits vibrations from the ______ to ______
tympanic membrane to incus
Cranial nerve pair concerned with hearing is:
acoustic nerve
Cranial nerve pair concerned with hearing is:
Acoustic
Auditory areas are located in the:
temporal lobes of cerebral cortex
Parts of brain that regulate balance and equilbrium are the:
cerebellum and midbrain
Arterial pressoreceptors and chemoreceptors are located in :
carotid arteries and the aortic arch
Arterial pressoreceptors detech changes in:
blood pressure
Arterial chemoreceptors detect changes in the level of
oxygen in blood
Information from arterial pressoreceptors and chemoreceptors may be used by the :P
medulla of brain to regulate respirations, heart rate, and blood pressure
Feeling of sensation in place of receptors were stimulated:
projection
Effect of a previous sensation on a current sensation is called:
contrast
Becoming unaware of a continuing stimulus is called:
adaptation
Being aware of a sensation even after the stimulus has stopped is called:
after image
Pain that originates in an internal organ but is felt as cuteanous pain is:
referred pain
Sense of hunger receptors are located:
hypothalamus and projected to stomach
Sense of thirst receptors loacted:
hypothalamus and projected to mouth and pharynx
Structure of ear important to balance and equilbirum:
crista ampullaris
Type of cone not associated with the retina:
yellow
What is the window of the eye:
cornea
What is the white of eye:
sclera
External ear ends at:
tympanic membrane
What is the organ of hearing?
cochlea
Muscle spindles considered:
proprioceptor
Part of body that is least able to distinguish a one point stimulus from a two point stimulus:
back
Sense of touch:
general sense
Eye and smell receptors are considered:
eye-special sense, smell-special and chemoreceptor