How can we help?

You can also find more resources in our Help Center.

35 terms

Vision, hearing, taste, smell

STUDY
PLAY
lacrimal duct
Tear duct, flows from top outer corner to the hole in the lacrimal bone
conjunctiva
membrane on outside of the eye and on the inside of the eyelid
scelera
wall of the eye (the whites)
cornea
clear front wall of the eye
optic nerve
carries impulses from retina to optic chiasma
iris
colored part of the eye
pupil
Hole through iris
Aqueous humor
fluid between cornea and the lens. it provides support and nutrients to the cornea
lens
behind the iris, held in place by the suspensory ligaments. it focuses light on to the retina
ciliary bodies
Muscles that pull ligaments that focus the lens
Suspensory ligaments
fine threads that hold the lens
Vitreous humor
gel-like liquid behind the lens
Retina
inner lining of the back part of the eyeball where the photoreceptors are found.
Rods
Photoreceptors around the edges of the retina. they sense blurry images in black and white
Cones
Photoreceptors in the center of the retina. they sense colors and fine detail.
Fovea centralis
area with the most cones
optic disc
Area with no rods or cones, where the nerve begins and information is sent.
refraction
the bending of light
accomodation
focusing of the eye
the visual pathway
cornea > aqueous humor> lens> Vitreous humor> photoreceptors on the retina> optic disc> optic nerve> optic chiasm> optic tract> thalamus> occipital lobe
Auricle
Outer cone shaped structure that gathers sound
External Auditory canal
also know as External accoustic meatus, carries sound waves to the tympanic membrane
ceruminous glands
glands that produce ear wax or cerumen
Tympanic membrane
eardrum, vibrates when hit by sound waves
auditory ossicles
3 small bones the malleus incus and the stapes
eustachian tubes
connect middle ear to the throat
oval window
membrane that borders the inner ear and middle ear
cochlea
shell shaped structure in the inner ear
organ of corti
structure that contains hearing receptors called hair cells
auditory pathway
outer ear> tympanic membrane> middle ear (auditory ossicles) > oval window> inner ear (cochlea and organ of corti) > impulse is sent on the vestibulocochlear nerve > thalamus > temporal lobe
Equilibrium
sense of balance, static (euilibrium while at rest) and dynamic (equilibrium while in motion)
Vestibule
entryway, area between cochlea and semicircular canals
Gustation
sense of taste (five basic tastes sweet, sour, bitter, salt, umami)
Olfaction
Sense of smell. sensors are located on the very top of the nasal cavity
olfactory pathway
receptors> olfactory bulb > Olfactory tract > thalamus > temporal lobe and limbic system