Neck And Oral Cavity

Question 1

What does the accessory nerve supply?

Answer 1

Motor to SCM and trapezius

Question 2

What are the borders of the anterior triangle?

Answer 2

Midline of the neck
Anterior surface of the SCM
Inferior border of mandible

Question 3

What are the borders of the posterior triangle?

Answer 3

Posterior border of SCM
Anterior border of trapezius muscle
Lateral part of clavicle

Question 4

What is the innervation to the suprahyoid muscles?

Answer 4

Facial for stylohyoid and posterior belly of digastric
Mylohyoid- CN5
Geniohyoid- CN12

Question 5

What are the extrinsic muscles of the tongue?

Answer 5

Genioglossus
Hyoglossus
Styloglossus
Palataglossus

Question 6

Function of genioglossus?

Answer 6

Depresses and protrudes tongue

Question 7

Function of hyoglossus

Answer 7

Depresses tongue

Question 8

Function of styloglossus

Answer 8

Retracts tongue

Question 9

Function of palatoglossus

Answer 9

Elevates back of tongue and depresses soft palate

Question 10

What nerve provides general sensation to the anterior 2/3rd of the tongue

Answer 10

Branch of V3 - lingual nerve

Question 11

What nerve provides general sensation to the posterior 1/3rd of the tongue?

Answer 11

CN9- Glossopharyngeal

Question 12

What nerve provides motor supply to the whole tongue except palatoglossus?

Answer 12

CN12- hypoglossal

Question 13

What nerve provides motor supply to the palatoglossus

Answer 13

CN10

Question 14

What triangles are contained within the anterior compartment of the neck? state whether they are paired/unpaired

Answer 14

Unpaired
-submental

Paired

• submandibular
• carotid
• muscular triangle.

Question 15

What triangles are contained within the posterior compartment of the neck? What structure divides the posterior triangle?

Answer 15

divided by posterior belly of omohyoid

2 triangles

• occipital
• omoclavicular

Question 16

Submandibular triangle

• borders
• contents

Answer 16

bounded by A + P bellies of digastric

contains submandibular gland, facial artery and vein

Question 17

Submental triangle

• borders
• contents

Answer 17

Bounded by digastric

contains lymph nodes

Question 18

Muscular triangle

• borders
• contents

Answer 18

Bounded by omohyoid, SCM, sternohyoid

Contains supra and infra hyoid muscles

Question 19

Carotid triangle

• borders
• contents

Answer 19

Bounded by
omohyoid, stylohyoid, digastric, SCM

Contains:

• common carotid artery -IJV
• nerve, accessory nerve

Question 20

Suprahyoid muscles

Answer 20

Stylohoid
Digastric
Mylohyoid
Geniohyoid

Question 21

Innervation to Suprahyoid muscles

Answer 21

Stylohoid- CN7
Digastric- CN7
Mylohyoid- CN5
Geniohyoid- CN12

Question 22

Infrahyoid muscles

Answer 22

• Omohyoid
• sternohyoid
• thyrohyoid
• sternothyroid

Question 23

Innervation of infrahyoid muscles

Answer 23

C1-C3 of ansa cervicalis

Question 24

Arterial Supply to the neck

Answer 24

• brachiocephalic
• external carotid
• subclavian arteris
• internal carotid

Question 25

Venous Drainage

Answer 25

IJV
EJV
AJV

Question 26

Occipital Triangle

• borders
• contents

Answer 26

Borders

• SCM
• Trapezius
• Omohyoid

Question 27

Supraclavicular triangle

-borders

Answer 27

Borders

• SCM
• Clavicle
• Omohyoid