Special Senses

Front 1

what are the general senses of touch?

Back 1

temperature , pressure, pain

Front 2

what are the special senses>

Back 2

smell,taste,sight,haering,equilibruim

Front 3

what percent of all sensory receptors are in the eyes?

Back 3

70%

Front 4

true or false : each eye has over a million nerve fibers

Back 4

true

Front 5

what are accessory structures of the eye?

Back 5

eyelids,eyelashes,conjunctiva,lacrimal apparatus,extrinsic eye muscles

Front 6

the eyelids are protected anteriorly by the?

Back 6

eyelids

Front 7

where do the eyelids meet?

Back 7

at the medial and lateral commissure(canthus)

Front 8

what is projecting from the border of each eyelid?

Back 8

eyelashes

Front 9

modified sebaceous glands associated with the eyelid edges are the?

Back 9

tarsal glands . they produce oil that lubricated the eye

Front 10

what lines the eyelids and covers part of the out surface of they eyeball?

Back 10

conjunctiva

Front 11

what is conjunctivitis?

Back 11

inflamed reddened=pink eye

Front 12

where are the lacrimal glands located?

Back 12

above the lateral end of each eye

Front 13

what do lacrimal glands do?

Back 13

relase a dilute salt solution (tears)

Front 14

the tears flush across the eyeball into the?

Back 14

lacrimal canaliculi

Front 15

after tears go into the lacrimal canaliculi they then go into the?

Back 15

lacrimal sac

Front 16

after tears pass the lacrimal canaliculi and the lacrimal sac they finally go into the?

Back 16

nasolacrimal duct which empties into the nasal cavity

Front 17

lacrimal secretions also contain?

Back 17

mucus,antiobodies and lysozyme

Front 18

what is lysozyme?

Back 18

enzyme that destroys bacteria

Front 19

the transparent central anterior portion of the sclera through which light enters the eye is called?

Back 19

cornea

Front 20

the middle coat of the eyeball that contains pigment which prevents it from collapsing inward is the ?

Back 20

choroid

Front 21

the gel like substance the reinforces the eyeball and prevents it from collapsing inward is the ?

Back 21

viterous humor

Front 22

tough,white connective tissue forms this portion of the fibrous layer of the eye?

Back 22

sclrea

Front 23

which region of the retina contains only cones and is the sharpest area of visual acuity?

Back 23

fovea centralis

Front 24

which layer of the eye contains rods and cones?

Back 24

retina

Front 25

the three sets if color receptors within the retina are sensitive to wave lengths of the visible light that are?

Back 25

red,blue,yellow

Front 26

which area of the retina locks rods and cones and therefore does not detect images?

Back 26

optic disc

Front 27

what structure of the eye focuses light on the retina?

Back 27

lens

Front 28

equilibruim receptors are located in the?

Back 28

inner ear

Front 29

the pupil is an opening with the?

Back 29

iris

Front 30

an ear infection following an illness such as a cold can pass from the throat though the auditory tube to the?

Back 30

middle ear

Front 31

the pathway of vibrations through the ossicles from the tympanic membrane or eardrum to the oval window is?

Back 31

malleus,incus,stapes

Front 32

the only special sense that is not fully functional at birth is?

Back 32

vision

Front 33

the structure that divides the outter ear from the middle ear is a membrane known as the ?

Back 33

tympanic membrane

Front 34

the eye condition resulting from the inability of the aqueous humor to drain from the eye is called?

Back 34

glaucoma

Front 35

the only human tissue that can be transplanted without fear of rejection is the ?

Back 35

cornea

Front 36

retina contains two receptors (photoreceptors) are called?

Back 36

rods and cones

Front 37

what does vitreous humor do ?

Back 37

helps maintain intraocular pressure

Front 38

:)

Back 38

:)

Front 39

what is the function of the lacrimal apparatus?

Back 39

protects moistens and lubricates eye, empties into nasal cavity

Front 40

what is lysozyme?

Back 40

enzyme that destroys bacteria

Front 41

what are the layers forming the wall of the eyeball?

Back 41

fibrous layer (outside layer) vascular layer (middle layer) sensory layer (inside layer)

Front 42

what is the sclera?

Back 42

white connective tissue

Front 43

what does tho cornea do ?

Back 43

it allows for light to pass through

Front 44

whats located in the fibrous layer?

Back 44

sclera and cornea

Front 45

what are the photoreceptor cells?

Back 45

rods and cones\

Front 46

where are rods found?

Back 46

towars the edges of retina

Front 47

what to rods allow?

Back 47

dim light and peripheral vision, all perception is in gray tones

Front 48

what do cones allow?

Back 48

detailed color vision

Front 49

what does the vitreous humor do?

Back 49

prevents eye from collapsing