Unit 16- Chapter 26

Question 1

parts of eye-6

Answer 1

retina- back of eye - sensory receptors for light
cornea- admits light rays in eyeball
iris/retina- regulate amount of light into eye
lens- focus light rays on retina
sclera- protection for inner eye structures ( whites )
conjuctiva- protective mucous membrane (pink)
choroid- middle of eye ( blood supply )

Question 2

3 layers of eye

Answer 2

sclera, choroid, retina

Question 3

vision requires 4 proper functions

Answer 3

muscles to move eyes
correct amount of light
correct focus
optic nerve to brain

Question 4

parts of ear

Answer 4

pinna(auricle)- external . visible part of ear
external auditory canal
middle ear( 3 bones)
inner ear- bony chambers (tympanic membrane-eardrum)

Question 5

ear is responsible for two sensors

two nerves

Answer 5

hearing and equilibrium

cochlear nerve carries hearing information, and the vestibular nerve carries equilibrium

Question 6

what is the (the sensory organ for hearing)

Answer 6

the cochlea

Question 7

The practitioner should be MOST suspicious of a Le Fort fracture if a patient who experienced massive blunt force trauma to the face presents with:

Answer 7

mobility of the facial bones.

Question 8

where is the vitreous humor located in eye

Answer 8

It is a clear, jellylike fluid near the back of the eye that cannot be replaced if it is lost.

Question 9

where can you palpate the superficial temporal artery

Answer 9

just anterior to tragus of ear

Question 10

4 major bones of face include

Answer 10

nasal, maxilla, zygomas ( cheekbones ), mandible

Question 11

how much of nose is bone

Answer 11

1/3

Question 12

what is the adams apple

Answer 12

centre of neck, upper larnyx, thyroid cartilage

Question 13

what is between thyroid and cricoid cartilage

Answer 13

cricothyroid membrane

Question 14

what main muscles makes up the nexk

Answer 14

sternocleidomastoid muscles

Question 15

what is diameter of eye and where is it located

Answer 15

1”

80 % protected from by orbit

Question 16

two fluid chambers that hold structure of eye and their location

Answer 16

vitreous fluid, jellylike, back of eye

aqueous fluid, front of lens

Question 17

what is sclera and where does cornea start

Answer 17

strong fibrous tissue that maintains structure, and cornea replaces it at front of eye

Question 18

3 bones of middle ear

Answer 18

malleus, incus , stapes

Question 19

middle ear connected to nasal cavity by what

Answer 19

eustachian tube

Question 20

3 le fort fractures and what they effect

Answer 20

fracture of maxilla

1-separate hard palate and lower maxilla from rest
2- nasal bone and inferior maxilla
3- separate entire midface from carnium

Question 21

eye surgery needs to be conducted in ___ mins or permanent blindness may occur

Answer 21

30

Question 22

3 guidlines for penetrating injuries to eye

Answer 22

1- never exert pressure injured eye
2- moist sterile dressing
3- protect eye with shield, close both eyes

Question 23

two locations of epistaxis

Answer 23

anterior- from septum, bleeds forward

posterior- severe and drain into throat

Question 24

Cerebrospinal fluid may leak from ears and nose following a

Answer 24

basal skull fracture

Question 25

plastic surgeons can fix tissue within how many days

Answer 25

7-10