dissection - the orbit

Question 1

colour of sclera

Answer 1

white

can be yellow due to jaundice

Question 2

superor rectus nerve supply and actions

Answer 2

CNIII
elevates
moves medially
intorts

Question 3

lateral rectus nerve supply and actions

Answer 3

abducens

moves laterally

Question 4

medial recturs

Answer 4

ocular motor

moves medially

Question 5

inferior rectis

Answer 5

III
moves downwards
medially
extorts

Question 6

superior oblique

Answer 6

trochlear
depress
laterally
intorts

Question 7

inferior oblique

Answer 7

III
elevates
laterally
extorts

Question 8

Nerve supply of levator palpebral superiororis

Answer 8

CN III

superior cervital ganglion fibres

Question 9

what happens if nerve supply is lost to elevator palpebral superiors

Answer 9

superior cervical ganglion (sympathetic)
pupal constricted
upper eyelid droop
(horners syndrome)

CNIII
drping eyelid
dilated pupil

Question 10

Clinical test for occular motor

Answer 10

track pen torch across visual frields

Question 11

damage to ocular motor patient complaint

Answer 11

ptosis (drooping of upper eyelid)

double vision

Question 12

damage to ocular motor effects

Answer 12

abducted in primary position
defective in adduction
elevation and depression

Question 13

trochlear clinical test

Answer 13

track pen torch across visual field

Question 14

damage to trochelae effects

Answer 14

limitation of depression

Question 15

patients complaint on damage of trochelar

Answer 15

diplopia

Question 16

adbucens clinical test

Answer 16

track pen tourch across visual feilds

Question 17

damage to adbudents effects

Answer 17

adducted in primary position

Question 18

patient somcpolaint of abducens

Answer 18

diplopia

Question 19

pupillary reflexes

Answer 19

pupil constricts upon bright lights

Question 20

afferent limb of pupil reflex

Answer 20

optic nerve

Question 21

efferent limb for pupil reflex closing eye

Answer 21

parasympathetic fibres in ocular motor

Question 22

blow out fractre

Answer 22

globe pushed posteirorally

wall of orbit breaks

Question 23

which wall of the orbit is most likey to be dames in blow out fracture

Answer 23

floor or orbit

Question 24

le fort III fracuture and what might be damaged

Answer 24

craniofacial separation

orbital floor, maxillary artier, lacrimal apparatus

Question 25

venous connections of the cavernous sinus

Answer 25

facial vein
supraorbital
infraorbital

Question 26

what does cavernous sinus thrombosis lead to

Answer 26

intracranial infection