Chapter 1 Anatomy, Embryology, Rads

Question 1

8 branches ECA

Answer 1

Sup thy, Asc ph, ling, facial, occ, Post auricular, maxillary, sup temporal

Question 2

Malignant LN CT con

Answer 2

> 1cm (1.5 for 2-5), round (oval is normal), necrotic center, Ill-defined margins

Do needle or excisional biopsy if these characteristics

Question 3

Sinus and T bone imaging

Acoustic Neuroma image

Answer 3

CT non-contrast

MRI IACs with contrast

Question 4

Sinus Development

Answer 4

Maxillary: first, larger at 3 and 7-12
Ethmoid: 3-4 birth, 10-15 age 12
Sphenoid: 3 yr
Frontal: 5 yr

Question 5

Agger nasi, Onodi, Haller

Answer 5

AN: most anterior ethmoid, A/S to MT attachment to lat wall

Onodi: lat or post to ant wall sphenoid, May be adjacent to optic n, carotid

Haller: to medial or inferior orbital walls, may obstruct maxillary ostium

Question 6

Tongue papillae

Answer 6

Fungiform - tip, lat edge
Filiform - all over, no buds
Foliate- posterolateral BOT
Circumvallate

Question 7

Facial nerve parotid surgery

Answer 7

1 cm A/I/D to tragal pointer
Follow TMSL to drop off, then 6-8 mm medial (passing thru SMF)
Medial to posterior belly insertion

Question 8

Mucous produced by sublingual gland

Answer 8

Mucinous

Question 9

Salivary embryology

Answer 9

First pharyngeal pouch, weeks 4-9

Par: Ectodermal outpouching

S/S: Endoderm

Question 10

Parathyroid embryology

Answer 10

Inf from third branchial pouch (descends with thymus)

Question 11

Percentage with ectopic parathyroid

Answer 11

20%

Question 12

Fascia layers - what they envelop

Answer 12

S: Platysma, Facial expression, SMAS

S2: trap, SCM, masseter, parotid, SM gland

M: strap, trachea, esophagus, thyroid, pharynx, larynx

D: cervical vertebrae, paraspinal mm

Question 13

Border between levels 2-3, 3-4 (LN)

Answer 13

Hyoid, carotid bif

Cricoid, Omo crosses jug

Question 14

Bronchial arch derivatives ear

Answer 14

1- Malleus h/n, incus body, short process, anterior malleal ligament (Meckel), TT, 3 hillocks His

2- malleus manubrium, incus long and lenticular process, stapes (Reichert), last 3 hillocks

Question 15

First branchial pouch ear

Answer 15

Eustachian tube, mastoid cells, inner layer TM

Question 16

First Branchial Cleft ear

Answer 16

EAC, outer layer TM

Question 17

Branchial arch derivatives larynx

Answer 17

3- stylopharyngeus (IX, elevates larynx)
4- thyroid and cuneiform cart, SLN, cricothyroid (SLN)
5/6- cricoid, arytenoid, corniculate cart, RLN, intrinsic laryngeal mm

Question 18

Muscles innervated by V

Answer 18

TT, TVP, mylo, ant dig

X does LVP

Question 19

Muscles innervated by VII

Answer 19

Expression

Stapedius, external auricular, occipitofront, stylohyoid, post dig

Question 20

Sensation from VII

Answer 20

Concha, postauricular skin, EAC wall, part of TM (IX, X also sense TM, EAC)

Question 21

Sensation from X

Answer 21

Larynx, postauricular skin, EAC, TM, pharynx

Question 22

Tongue muscle not innervated by XII

Answer 22

Palatoglossus

Question 23

Layers of VC

Answer 23

Squamous
SLP
Vocal Ligament (int/deep LP)
Thyroarytenoid and vocalist