anatomy quiz (special senses)

conjunctiva

membrane that lines eyelids

lacrimal glands

releases tears (moisten and protects eyes)

sclera

protective white part on eyeball

cornea

clear central part where light enters the eye

iris

pigmented part

pupil

rounded opening of iris where light passes through

retina

thin tissue in back of the eye (photoreceptors are here)

lens

biconvex structure that focuses light on retina

optic nerve

group of axons carry info from retina to brain

Auricle

shell shaped around opening

Auditory canal

glands secrete ear wax

Tympanic Membrane (eardrum)

vibrates to amplify sound waves

Middle Ear

air filled cavity with small bones (transmit vibrations)

Eustachian Tube

controls pressure in middle ear

Inner ear

bony labyrinth (with fluid)

Cochlea

spinal cavity with hair cell receptors

Olfactory Receptors

sense of smell (nasal cavity)

Taste Buds

sense of taste on mouth (tongue)