chapter17 part1 p570-1

Question 0

palpebrae

Answer 0

eyelid

Question 1

What are the accessory structures of the eye?

Answer 1

eyelids, superficial epithelium of eye, structures involved w/ production, secretion an dremoval of tears

Question 2

palpebral fissure

Answer 2

eye gap

Question 3

medial and lateral canthus

Answer 3

corners of eyes

Question 4

Along the inner margin of the lid- small, modified sebaceous glands

Answer 4

tarsal glands

Question 5

tarsal gland other name

Answer 5

Meibomian glands

Question 6

what do tarsal glands secrete?

Answer 6

lipid-rich prouct that helps keep eyelids from sticking together

Question 7

mass of soft tissue that contains glands producing thick secretions contributing to gritty deposits after sleep

Answer 7

lacrimal caruncle

Question 8

cyst that results from infection of tarsal gland

Answer 8

chalazion

Question 9

painful localized swelling from from an infection in a sebaceous gland associated w/ eyelash

Answer 9

sty

Question 10

which muscles close the eyelid? which raise the upper eyelid?

Answer 10

orbicularis oculi close the eyes

levator palpebrae superioris muscle raise the lids

Question 11

conjunctiva

Answer 11

epithelium covering inner surface of eyelids and outer surface of the eyeball- mucous membrane covered by specialized stratified squamous epithelium.

Question 12

covers INNER surface of the eyelids

Answer 12

palpebral conjunctiva

Question 13

covers ANTERIOR SURFACE of the eyes

Answer 13

ocular conjunctiva/bulbar conjunctiva

Question 14

transparent part of the outer fibrous layer of the eye

Answer 14

cornea

Question 15

delicate squamous membrane- 5-7 cells thick, continuous w/ ocular conjunctiva covering the cornea

Answer 15

corneal epithelium

Question 16

ocular conjunctiva extends to the edges of

Answer 16

cornea

Question 17

what keeps ocular conjunctiva and cornea moist and clean?

Answer 17

constant supply of fluid washing over surface of eyeball

Question 18

______ cells in epithelium assist accessory glands in lubricating surfaces of conjunctiva to prevent drying out+ causing friction

Answer 18

mucous

Question 19

inflammation of conjunctiva

Answer 19

conjunctivitis

Question 20

conjunctivitis

Answer 20

pinkeye- inflammation of conjunctiva

Question 21

possible causes to redness of conjunctivitis

Answer 21

dilation of blood vessels deep in conjunctival epithelium-

1. pathogenic infection
2. physical irritation of conjunctival surface
3. allergic
4. chemical

Question 22

lacrimal apparatus - name 5 functions of constant flow of tears

Answer 22

1. keep conjunctival surfaces moist and clean
2. reduce friction
3. remove debris
4. prevent bacterial infection
5. provide nutrients and oxygen to portions of conjunctival epithelium

Question 23

lacrimal apparatus function

Answer 23

produces, distributes and removes tears

Question 24

Name 4 components of the lacrimal apparatus

Answer 24

1. lacrimal gland+ducts
2. paired lacrimal canaliculi
3. lacrimal sac
4. nasolacrimal duct

Question 25

Where palpebral conjunctiva becomes continuous w/ ocular conjunctiva

Answer 25

fornix

Question 26

lateral portion of the superior fornix receives 10-12 ducts from

Answer 26

lacrimal gland/tear gland

Question 27

gland w/ size and shape of almond

Answer 27

lacrimal/tear gland

Question 28

function of lacrimal gland

Answer 28

provide key ingredients and most of the volume of tears that bathe the conjunctival surfaces

Question 29

by what mechanism does lacrimal glands supply nutrients and oxygen?

Answer 29

diffusion

Question 30

lacrimal secretions supply nutrients and oxygen to

Answer 30

corneal cells

Question 31

properties of lacrimal secretions

Answer 31

a. watery
b. slightly alkaline
c. contain antibacterial enzyme lysozyme
d. contain antibodies

Question 32

once lacrimal secretions reach the ocular surface, they mix w/ the products of __________ and ________ to create an “oily slick”

Answer 32

accessory glands, tarsal glands