Anatomy

Question 1

Superior and Inferior Meatuses and Sinuses

Answer 1

Superior: Posterior Ethmoid air cells empty here
Inferior: Nasolacrimal duct empites here

Question 2

Middle meatus and drainage

Answer 2

Semilunar Hiatus: frontal/maxillary/anterior ethmoid sinuses drain here
Ethmoid bulla: frontal/maxillary/anterior ethmoid sinuses drain here

Question 3

Tubal tonsil inflammation

Answer 3

Can obstruct Eustachian tube

Question 4

Nasal cavity arterial supply

Answer 4

Lateral walls: external carotid – maxillary – sphenopalatine artery

Septum: internal carotid – ophthalmic – anterior/posterior ethmoidal

Question 5

Tooth pain

Answer 5

Can be Maxillary sinus problem

Question 6

Tongue lymph drainage

Answer 6

Posterior tongue – superior deep cervical nodes (jugulodigastric)

 Lateral: submandibular nodes

 Middle: inferior deep cervical nodes

 Anterior: submental nodes

Question 7

Where is the palatine tonsils?

Answer 7

B/t palatoglossal and palatopharygenal arches

Erosion through fascia & superior constrictor allows access to retropharyngeal space – superior mediastinum

Question 8

Lung Auscultation

Answer 8

Superior lobe: 1 st intercostal space (ICS) b/t MCL & sternal margin

 Middle lobe: 5 th ICS @ MCL – only on R lung

 Lingula: 5 th ICS @ MCL – only on L lung, part of superior lobe

Question 9

Venous drainage of nasal cavity

Answer 9

Anteriorly: facial v.

 Posteriorly: sphenopalatine v. – pterygoid plexus

 Superiorly: ethmoidal v. – ophthalmic v.

Question 10

Lymph drainage of nasal cavity

Answer 10

Anteriorly: submandibular nodes

 Posterior 2/3 & sinuses: retropharyngeal & superior deep cervical (jugulodigastric) nodes

Question 11

Nasal cavity innervation

Answer 11

Anterior ethmoidal n. (from V 1 ): sensory to anterior & superior nasal cavity

 Nasopalatine n. (from V 2 ): sensory to septum & conchae

Question 12

Innervation of Parotid Gland

Answer 12

CN IX and auriculotemporal branch of V 3

Question 13

Drainage of Salivary glands

Answer 13

Parotid: Near 2nd molar (Teeth 2 and 15)
Submandibular: Frenulum on floor of the mouth
Sublingual: Does not have its own duct (drains with submandibular)

Question 14

Lymph Drainage of Mouth, Hard and Soft palate

Answer 14

Hard palate: superior deep cervical nodes (jugulodigastric nodes)
Soft palate: retropharyngeal and superior deep cervical nodes
Floor of Mouth: superior deep cervical or submandibular

Question 15

Lymph drainage of tongue

Answer 15

Posterior tongue – superior deep cervical nodes (jugulodigastric)

 Lateral: submandibular nodes

 Middle: inferior deep cervical nodes

 Anterior: submental nodes (lip carcinoma goes here)

Question 16

Palantine tonsil

Answer 16

located b/t palatoglossal & palatopharyngeal arches

Erosion through fascia & superior constrictor allows access to retropharyngeal space – superior mediastinum

Question 17

Innervation of pharynx

Answer 17

Vagus (CN X) – superior laryngeal – internal & external branches of superior laryngeal n.

 Internal branch: runs w/ superior thyroid a.

 External branch: to cricothyroid membrane & thyroid gland

 Vagus (CN X) – inferior laryngeal – recurrent laryngeal n.

Question 18

Ear innervation

Answer 18

External surface of TM & external acoustic meatus: CN V 3 – auriculotemporal n.

Internal surface of TM: CN IX

Question 19

Lymph drainage of Middle ear

Answer 19

Superior deep cervical nodes