Week 3 - special senses

Question 1

7 bones which form the orbit

Answer 1

frontal, lacrimal, ethmoid, sphenoid (2), maxilla, zygoma

Question 2

What passes through the optic foramen?

Answer 2

optic nerve

ophthalmic artery

Question 3

What passes through superior orbital fissure?

Answer 3

CN 3,4,6,V1, ophthalmic veins

Question 4

What are the main contents of the orbit?

Answer 4

eyeball, orbital fat, muscles, vessels, lacrimal apparatus, optic nerve

Question 5

What makes up the outer fibrous layer of the eye?

Answer 5

cornea and sclera

Question 6

What makes up the middle vascular layer of the eye?

Answer 6

choroid, iris and ciliary body

Question 7

What makes up the inner sensory layer of the eye?

Answer 7

retina

Question 8

What is the name given to the fluid in the anterior and posterior segments of the eye?

Answer 8

aqueous humor

vitreous humor

Question 9

What part of the eye produces aqueous humor?

Answer 9

ciliary body

Question 10

What are the 3 intrinsic muscles of the eye?

Answer 10

ciliaris, constrictor pupillae and dilator pupillae

Question 11

Ciliaris muscle function and innervation

Answer 11

cranial nerve 3 - accommodation

Question 12

Constrictor and dilator pupillae innervations

Answer 12

constrictor = parasympathetic 3 
dilator = sympathetic

Question 13

Superior rectus movements (RADSIN)

Answer 13

elevation
adduction
intorsion

Question 14

Superior oblique movements

Answer 14

intorsion
abduction
depression

Question 15

Which is the only muscle to arise from the anterior aspect of the orbit?

Answer 15

inferior oblique

Question 16

Name the ligaments that prevent overadduction and overabduction of the eye

Answer 16

check ligaments

Question 17

Name the 3 ossicles

Answer 17

malleus, incus and stapes

Question 18

2 muscles related to ossicles

Answer 18

tensor tympani and stapedius

Question 19

Name 2 areas with which the middle ear communicates

Answer 19

nasopharynx and mastoid antrum

Question 20

Which part of the temporal bone do the middle and inner ear lie?

Answer 20

petrous

Question 21

What fluid lies within the bony labyrinth?

Answer 21

perimlymph

Question 22

What fluid lies within the membranous labyrinth?

Answer 22

endolymph

Question 23

What is the function of the cochlea and semi circular canals?

Answer 23

cochlea - hearing

semi circular canals - balance

Question 24

Which foramen does the facial nerve exit the posterior cranial fossa?

Answer 24

internal acoustic meatus

Question 25

Where do the lymphatics from the jugular lymph trunks drain into the right and left side?

Answer 25

right lymphatic duct | thoracic duct

Question 26

List some lymphatic node groups of the face and scalp

Answer 26

parotid, buccal, submental, submandibular, superficial cervical, occipital, mastoid

Question 27

What nodes do all of the face and scalp drain into?

Answer 27

deep cervical