special senses lab

foliate papillae

circumvallate papillae

filiform papillae

fungiform papillae

taste buds

olfactory receptor cells

cilia

palpebrae (eyelid)

medial palpebral commissures

lateral palpebral commissures

conjuctiva

lacrimal gland

lacrimal puncta

superior oblique muscle

inferior oblique muscle

superior rectus muscle

inferior rectus muscle

medial rectus muscle

lateral rectus muscle

levator palpebrae superioris

fibrous tunic

contains sclera and cornea

cornea

sclera

scleral venous sinus

vascular tunic

contains the choroid, ciliary body, and the iris

choroid

ciliary body

orange region

ciliary muscles

ciliary processes

suspensory ligaments/zonule

ora serrata

A

iris

E

pupil

F

lens

H

neural tunic (retina)

M

macula lutea

N

fovea centralis

O

optic disc

R

anterior cavity

anterior chamber

posterior chamber

aqueous humor

posterior cavity

J

vitreous humor

optic nerve

P

pigmented layer

neural layer

rods and cones

bipolar cells

….

ganglion cells

pinna

external auditory canal

tympanic membrane

ossicles

malleus, stapes, and incus

malleus

incus

stapes

auditory tube

round window

oval window

vestibule

semicircular canals

cochlea

semicircular ducts

utricle

red

saccule

green

cochlear duct

spiral organ

vestibulocochlear nerve

vestibular branch and cochlear branch

vestibular branch

pink

cochlear branch

blue

scala vestibuli

vestibular membrane

scala media

basilar membrane

tectorial membrane

hair cells

scala tympani

endolymph

in the membranous labyrinth of the inner ear

perilymph

in the bony labyrinth

scala vestibuli/vestibular duct

red

scala media/cochlear duct

blue

scala tympani/tympanic duct

green

vestibular membrane

red

basilar membrane

blue

optic nerve

sclera

cornea

iris

pupil

cornea

vitreous humor

retina

optic disc

stimulus

change in the environment

receptive fields

Cutaneous receptors have areas within which they can detect stimuli

conductive hearing loss

occurs when there is a problem conducting sound waves anywhere along the route through the external ear, tympanic membrane, ossicles, inner ear

sensorineural hearing loss

occurs when there is damage to the inner ear (cochlea), or to the nerve pathways from the inner ear to the brain.

relationship between the density of receptors and the size of receptive fields

The greater the density of the receptors the larger the size of the receptive fields

areas that have small receptive fields

Areas of the hand, face, and lips