Ch 17 Special Senses Anatomy

Front 1

A thin, protective mucous membrane that lines the inner aspect of the eyelids and passes from th eeyelids onto the surface of the eyeball, where it covers the sclera

Back 1

Conjuctiva

Front 2

Upper and lower eyelid; shade the eye during sleep, spread lubricating secretions over the eyeball tears

Back 2

Palpebrae

Front 3

Modified sebaceous glands; secretions helps keep eyelids from ahering to one another

Back 3

Tarsal or Meibomian gland

Front 4

Projection from the border of each eyelids; help protect the eyeballs from foerent objects, perspiration, and directive rays of the sun

Back 4

Eyelashes

Front 5

Produce and drains tears

Back 5

Lacrimal apparatus

Front 6

Move the eyeball medially, laterlly, superiorly, or inferiorly

Back 6

Extrinsic eye muscle

Front 7

Arch transversely above the eyeballs and protect the eyeballs from foreign objects, perspiration, and the direct ray of the sun

Back 7

Eyebrows

Front 8

A thick fold of connective tissue tht gives form and support to the eyelids

Back 8

Tarsal plate

Front 9

White of the eye; gives shape to the eyeball, makes it more rigid, protects its inner parts

Back 9

Sclera

Front 10

Circular band of smooth muscle that alter the shape of the lens for near or far vison

Back 10

Ciliary muscle

Front 11

colored portion of the eyeball; regulates the amount of light entering the posterior part of the eyeball

Back 11

iris

Front 12

The hole in the center of the iris

Back 12

pupil

Front 13

Innermost layer of the eyeball; beginning of the visual pathwyas; contains rod and cones

Back 13

Retina

Front 14

Avascular superficial layer of the eyeball; includes cornea and sclera

Back 14

fibrous tunic

Front 15

Watery fluid in the anterior cavity that help nourish the lens and cornea; helps maintain shape of the eyeball

Back 15

Aqueous huomr

Front 16

biconvex transparents structure that fine tunes focusing of light ray for clear vision

Back 16

Lens

Front 17

Middle, vscularized layer of the eyeball; includes choroid, ciliary bosy, and iris

Back 17

Vascular tunic

Front 18

the flap of the elastic cartilage covered by skin that captures sound waves; the pinna

Back 18

Auricle

Front 19

Partition between external auditory canal and the middle ear

Back 19

Tympanic membrane

Front 20

Ear bones, malleus, incus, stapes

Back 20

Auditory ossicle

Front 21

Receptor organs for equalibrium; the saccule, utricle, and semiciular canals

Back 21

Vastibular apparatus

Front 22

Swollen enlargent in semicircular canals; contains structres involves in dynamic equalibrium

Back 22

Ampulla

Front 23

Contains the spiral organ

Back 23

cochlea

Front 24

Fluid found inside bony layinth; bulging of the oval window casues pressure waves in thid fluid

Back 24

perilymph

Front 25

Opening between the middle and inner ear; recieves base of tapes

Back 25

oval window

Front 26

Opening between the middle ear and internal ear; is enclosed by a membrane called the secondary tympanic membrane

Back 26

round window

Front 27

The pressure equalization tubes that connects the middle ear to the nosopharyxn

Back 27

Auditory or Eustachian

Front 28

Oval central portion of the bony labyrinth; contains utricle and saccule

Back 28

Vestibule

Front 29

fluid found within the membranou labyrith; pressure waves in this fluid casue vribration of the basilar membrane

Back 29

Endolymph

Front 30

contains hari cells which are the receptors for hearing

Back 30

spiral organ

Front 31

Receptor for static equalibrium; also contributes to some aspects of dynamic equalibrium; consist of hair cells and supporting cells

Back 31

macula

Front 32

Ability to focus for close (less than 20 ft) vesion

Back 32

accommadate

Front 33

Normalvision

Back 33

emmertropic

Front 34

farsightedness

Back 34

Hyperopia

Front 35

Nearsightedness

Back 35

myopic

Front 36

Reduce ablilty to focus on near objects ( age 45 and over)

Back 36

Presbyopia

Front 37

is a vision condition that causes blurred vision due either to the irregular shape of the cornea, the clear front cover of the eye, or sometimes the curvature of the lens inside the eye. An irregular shaped cornea or lens prevents light from focusing properly on the retina, the light sensitive surface at the back of the eye. As a result, vision becomes blurred at any distance.

Back 37

astigmatism