lecture 5 - head & neck 5

Question 1

Which bones form the orbit?

Answer 1

lesser wing of sphenoid, frontal bone, ethmoid bone, maxilla, lacrimal bone, zygomatic bone

Question 2

Where is the apex of the orbit?

Answer 2

At the optic canal

Question 3

What is the anatomical term for eyelids?

Answer 3

Palpebrae

Question 4

What covers the internal surface of the palpebrae?

Answer 4

Conjuctiva

Question 5

How are tears drained from the eye to the nasal cavity?

Answer 5

collected by puncta, lacrimal canaliculi, lacrimal sac, nasolacrimal duct to nasal cavity

Question 6

What are the fibrous tissue bands that strengthen the palpebrae?

Answer 6

Tarsal plates

Question 7

How are the palpebrae joined to the lateral and medial margins of the orbit?

Answer 7

Via medial and lateral palpebral ligaments

Question 8

What nerve gives parasympathetic supply to the lacrimal gland for secretion?

Answer 8

Greater petrosal nerve (CNVII), which runs with the lacrimal nerve

Question 9

Which muscle elevates the upper eyelid?

Answer 9

Levator palpebrae superioris

Question 10

Where is the common attachment of the rectus muscles?

Answer 10

The tendinous ring in the apex of the orbit

Question 11

Which muscle passes through the trochlea before attaching to the eye?

Answer 11

Superior oblique

Question 12

Which muscles allow for upwards movement of the eye?

Answer 12

superior rectus, inferior oblique

Question 13

Which muscles allow for upwards and inwards movement of the eye?

Answer 13

superior rectus

Question 14

Which muscles allow for upwards and outwards movement of the eye?

Answer 14

inferior oblique

Question 15

Which muscles allow for downwards movement of the eye?

Answer 15

inferior rectus, superior oblique

Question 16

Which muscles allow for downwards and inwards movement of the eye?

Answer 16

inferior rectus

Question 17

Which muscles allow for downwards and outwards movement of the eye?

Answer 17

superior oblique

Question 18

Which muscles allow for inwards movement of the eye?

Answer 18

medial rectus

Question 19

Which muscles allow for outwards movement of the eye?

Answer 19

lateral rectus

Question 20

Which nerves in the orbit dilate the pupils?

Answer 20

Long ciliary nerves

Question 21

What is the function of the cliliary ganglion?

Answer 21

relay station for parasympathetic fibres of the oculomotor nerve

Question 22

Which nerve supplies sensation to the auricle?

Answer 22

V3 (auriculotemporal nerve)

Question 23

Which bone surrounds the internal structures of the ear?

Answer 23

Petrous temporal bone

Question 24

What is the anatomical name for ear wax?

Answer 24

Cerumen

Question 25

Which glands secrete ear wax?

Answer 25

Ceruminous and sebaceous glands in the external ear

Question 26

What is the collective name for the bones of the inner ear?

Answer 26

ossicles

Question 27

What are the names for the 3 ossicles?

Answer 27

Malleus, incus, stapes

Question 28

Where does the footplate of stapes communicate with?

Answer 28

The oval window

Question 29

What are the 2 muscles of the middle ear?

Answer 29

Tensor tympani, stapedius

Question 30

What nerve supplies tensor tympani?

Answer 30

V3 / mandibular nerve

Question 31

What nerve supplies stapedius?

Answer 31

facial nerve / VII

Question 32

What is the function of stapedius muscle?

Answer 32

Dampens excessive movement from loud noises

Question 33

What is the bony labyrinth?

Answer 33

A very dense part of the petrous temporal bone which contains the vestibule