Triangles Of The Neck

Question 1

Posterior Triangle Boundaries

Answer 1

Sternocleidomastoid, trapezius, middle third of clavicle

Question 2

Anterior Triangle Boundaries

Answer 2

Mandible, anterior midline, sternocleidomastoid

Question 3

Apex of anterior triangle lies

Answer 3

Inferiorly at jugular notch

Question 4

Roof of anterior triangle

Answer 4

Investing layer of deep cervical fascia, superficial cervical fascia and platysma

Question 5

Subdivisions of anterior triangle

Answer 5

Submental
Submandibular
Carotid
Muscular

Question 6

Only anterior triangle subdivision that is unpaired

Answer 6

Submental

Question 7

Submental triangle boundaries

Answer 7

Anterior bellies digastric (R&L) and body of hyoid bone

Question 8

Floor of submental triangle

Answer 8

Mylohyoid muscle

Question 9

Submental triangle contents

Answer 9

Minor veins and lymph nodes

Question 10

Submandibular triangle boundaries

Answer 10

Mandible, anterior belly digastric, and posterior belly digastric

Question 11

Floor of submandibular triangle

Answer 11

Mylohyoid and hyoglossus muscles

Question 12

Contents of submandibular triangle

Answer 12

Submandibular gland, internal carotid artery, facial artery, internal jugular vein, glossopharyngeal and vagus nerves

Question 13

Carotid triangle boundaries

Answer 13

Posterior belly digastric, superior belly omohyoid, sternocleidomastoid

Question 14

Floor of carotid triangle

Answer 14

Thyrohyoid, hyoglossus, and inferior and middle constrictor muscles

Question 15

Contents of carotid triangle

Answer 15

Common and internal carotid arteries, external carotid artery (superior thyroid, lingual, and facial arteries), tributaries of internal jugular vein

Question 16

Muscular triangle boundaries

Answer 16

Superior belly omohyoid, anterior midline of neck, sternocleidomastoid

Question 17

Floor of muscular triangle

Answer 17

Posterior layer of pretracheal fascia

Question 18

Contents of muscular triangle

Answer 18

Sternohyoid and sternothyroid muscles, thyroid gland, trachea, and esophagus