chp16
nerve signals arriving at the superior olivary nucleus are involved in which of the following functions?
* localize the sound *decrease the vibration of the sound *turn our head toward the sound
what is the functions of the inner ear?
*balance *hearing
iris
*colored part o the eye composed of two layers smooth muscle: melanocytes vascular nervous structure *ciliary body
vascular tunic
*contain blood and lymph vessels
sclera
*dense irregular connective tissue *provides for eye shape
papillae
*filiform *fungiform *vallate *foliate
each macula of the utricle and saccule is composed of which of the following?
*hair cells *supporting cells
conjunctiva
*it doesn't cover the cornea *it is vascular *it contains goblet cells
optic tracts extend to which of the following after they leave the optic chiasm?
*lateral geniculate nucleus of the thalamus *superior colliculi
bright light adaptation
*pupils constrict *rods become inactive *cones gradually adjust
somatic nociceptors
*sprained ankle *exposure to acid on the skin *touching a hot pan
the utricle and saccule are involved in which of the following functions involving position of the head?
*static equilibrium *linear acceleration
what are you basic taste sensations
*umami *sour *sweet
what structure focuses incoming light onto the retina?
Lens
the tympanic cavity is filled with?
air
the semicircular ducts are involved in detecting ____ acceleration.
angular
what chamber is between the iris and cornea?
anterior chamber
the lamina propria is made of____ tissue.
areolar connective tissue
mechanoreceptors found?
baroreceotir proprioceptors tactile *ear *hair *skin
Taste buds are made of gustatory cells,supporting cells and _____cells
basal cells
what substance produced in the external ear impedes microorganism growth?
cerumen
_____ are receptors that detect chemicals
chemoreceptors
gustatory cells are:
chemoreceptors
what structure is filled with pigment from melanocytes?
choroid
what is snail shaped in the ear?
cochlea
the cochlea has three fluid-filled ducts
cochlear duct scala tympani
as we adjust to low light, our ____ become nonfictional and it may take ____ for rhodopsin to become regenerated sufficiently that you can see well in low-light conditions
cones 20-30 min
the sphincter pupillae ___ the pupil.
constricts
when light hits the eye, the pupil ____ in bright light or ___ in dim light
constricts dilate
a ____ shaped lens is used to treat hyperopia and a _____ shaped lens is used to treat myopia
convex concave
what is the fibrous tunic made up of?
cornea sclera
free nerve endings are terminal branches of:
dendrits
the auricle has ___ cartilage that supports its structure
elastic
the auricle has _____ cartilage that supports its structure
elastic
examples of encapsulated receptors
end bulbs krause bulbs
the auricle directs sound waves into the bony tube called the ______ _____ _____.
external acoustic meatus
what type of receptor is found in the mucous membranes?
exteroceptor
the primary function of the ___is to prevent large objects from contacting the eye
eyelaches
the eye is spherical measuring about 5 centimeters in diameter and most of it is receded into the orbital of the skull. true or false
false
In a taste bud the basal cells replace the ___ cells
gustatory
the term, equilibrium refers to out awareness and monitoring of our ____ positions
head
endolymph has a ___ potassium concentration.
high
the vitreous body is also called the vitreous____.
humor
when the photoreceptors stop ____ the bipolar cells, the bipolar cells can then release their neurotransmitter that binds to receptors on the ganglion cells.
inhibiting
specific type of receptors called ____ detect stimuli in he internal organs
interoceptors
what structure is the dividing line between the anterior and posterior chambers?
iris
what causes conjunctivitis?
irritants
where are tears created?
lacrimal apparatus
macular degeneration occurs when the ___ degenerates.
macula lutea
the stimulating agent is also called the ____of stimulus
modality
gustatory cells within the taste buds are a specialized type of epithelial cell called ___ cells
neuroepithelial
when use the sense of ___ to sample our environment for information about the food we will eat the presence of other individuals in the room, or potential danger.
olfaction
olfactory hairs house receptor proteins for detecting ___ specific odorant molecules
one
"blind spot "
optic disc
the lacrimal gland has a superior or ____ part and an inferior or ____ part.
orbital palpebral
a detached retina is caused by a separation between which two layers
outer pigmented and the inner neural layers of the retina separate
the eyelids are also called
palpebrae
the eyelids are joined at the medial and lateral___ commissure or _______
palpebral canthi
the portion of the conjunctiva on the inside of the eyelid is called the :
palpebral conjunctiva
the external ear is located mostly on the outside of the body, and the middle and inner ear areas are housed within the _____ part of the temporal bone.
petrous
the external lear is located mostly on the outside of the outside of the body, and the middle and inner ear areas are housed within the _____ part of the temporal bone
petrous
if stimulated over a period of time, ______ receptors lose sensitivity over time.
phasic
the most visible part of the external ear is the ___ or ____
pinna auricle
structure contain exteroceptors
skin oral cavity
cataracts are a disorder of the ?
small opacities with in the lens
which auditory ossicle contacts the oval window?
stapes
tactile cells associated with tactile discs are located in the :
stratum basale
where is the lacrimal gland located
superior and lateral to the eye
from the optic chiasm, optic tracts extend to the ____ ____ to coordinate reflexive movements.
superior colliculus
the _____ ligaments connect the ciliary body to the lens.
suspensory
the most numerous receptor
tactile receptor
gustation is the sense of _______
taste
what muscles are located in the middle of the ear?
tensor tympani stapedius
a feature common to all receptors is____.
the ability to respond to a stimulus
somatics receptor are found within:
the body wall
ossicles in order:
think M.I.S Malleus Incus Stapes
neurons i the olfactory bulb travel through the olfactory ___ to the brain
tracts
transducers:
transform energy from one form to another form
vestibular complex
utricle saccule semicircular
what type of papillae is largest and least numerous
vallate
the roof of the cochlear duct is formed by the ___ membrane.
vestibular
hearing and our sense of balance comes form the stimulation of which cranial nerve?
vestibulocochlear
olfactory hair
*they are unmyelinated *they are immobile
sensory receptors in which of the following structures help monitor and adjust our equilibrium?
*utricle *saccule *semicirular ducts
in the light, ____ cell no longer inhibited and therefore release the neurotransmitter ____.
bipolar glutamate
receptors for general senses are distributed throughout the ____ and viscera
body
aqueous humor is secreted into the _____ chamber before traveling to the _____ chamber of the eye.
posterior anterior
what is the margin between the photosensitive and non photosensitive region of the retina called?
pra serrata
what type of receptor monitor monitors changes in position?
proprioception
what type of receptors make you aware of your body positioning
proprioceptors
as tears drain, through the lacrimal caruncle, they enter small holes called the lacrimal_____
puncta
the external acoustic meatus terminates at the _____ ______ most commonly called ____
tympanic membrane eardrum
in the eye the ____ humor is gelatinous.
vitreous
what color is the macula lutea?
yellow
the apparent distortion of the spoon in the water glass is due to the phenomenon called____.
refractive index
root hair plexuses are usually found in the:
reticular layer of the dermis
the are that a receptor cell gathers information from is called the :
receptive field
what structures contain exteroceptors?
receptors within skin or mucous membranes receptors for smell taste(oral cavity) vision hearing equilibrum
the lens is ____ when we are viewing close-up objects
round