Ds2102 Practical Qs

Question 1

What makes up the skeleton of the external Nose

Answer 1

Nasal Bones
maxilla
Frontal bone
5 cartilages
(2 lateral, 2alar, 1 septal)

Question 2

What structure of the nose is responsible for the variances in shape of individuals noses

Answer 2

The cartilages

Question 3

what makes up the nasal septum

Answer 3

Perpendicular plate of ethmoid
vomer
septal cartilage

Question 4

What is a rhinorrhea

Answer 4

Leakage of CSF from the subarachnoid space above the ethmoid bone. THis occurs due to bone fracture and and increase the risk of meningitis

Question 5

what structures bound the nasal cavities (Ant, Post)

Answer 5

Anteriorly: Nares
Posteriorly: Choanae

Question 6

What structure separates the nasal cavity from the nasal pharynx

Answer 6

Choanae

Question 7

what is the only space not lined with nasal mucosa in the nasal cavity

Answer 7

Vestibule

Question 8

what are the arteries that supply the nasal cavity

Answer 8

sphenopalatine artery
posterior ehtmodial arteries
greater palatine artery
superior labial arteries
lateral nasal branches of the facial artery

Question 9

what is formed in the anterior portion of the nasal cavity by the arteries of the nasal cavity

Answer 9

Anastomosis known as kisselbachs area

Question 10

what are the main veins that drain the nasal cavity

Answer 10

Spenopalatine, facial and ophthalmic veins

Question 11

describe the innervation of the nasal cavity

Answer 11

Nasopalatine nerve
Greater palatine nerve
Ant/post Ethmoidal nerves

Question 12

name 5 openings/ foramina of the orbit

Answer 12

Optic canal
Superior orbital fissure
Inferior orbital fissure
Eithmoidal foramina
Supraorbital notch
Nasolacrimal canal

Question 13

Describe the significance of the zygomatic buttress to LA and specifically what teeth this impacts?

How can you properly anaesthetize these teeth/tooth?

Answer 13

Thick plate of cortical bone decreases the diffusion towards the B roots of the first permanent molar.

Solution needs to be deposited Medally and Distally

Question 14

what nerves are involved in brachiomotor

Answer 14

5,7,9,10

Question 15

what nerves are somatic motor

Answer 15

3,4,6,11,12

Question 16

what type of joint is a suture

Answer 16

Fibrous joint “syndomosis”

Question 17

Describe the innervation of the scalp

Answer 17

Ant: V1
Temporal region V2,v3
Post, C2,C3

Question 18

What are risk factors for canadiasis

Answer 18

Hiv, Diabetes, Immunocompromised, Antibiotic use

Question 19

targets of Antibacterials

Answer 19

cell wall
dna synthesis
Protien synthesis
Cell membrane

Question 20

how do beta lactams exert their effect

Answer 20

Inhibited the production of peptidoglycan

Question 21

why are tetracyclines not recommended for children under 12

Answer 21

Staining of teeth, as well as hypoplasia of developing teeth.

Question 22

What are common Antibacterials that produce their effects via protein synthesis inhibition

Answer 22

Tetracyclines, clindamycin

Question 23

why is adrenaline important in LA

Answer 23

Acts as a vasoconstrictor and keeps the effects of the LA localized