Triangles of the Neck

Question 1

posterior triangle of the neck

Answer 1

lateral cervical region

Question 2

what are the boundaries of the posterior triangle of the neck

Answer 2

a: SCM
p: trapezius
i: clavicle

Question 3

what are the contents of the posterior triangle

Answer 3

1. subclavian a.
2. external jugular v.
3. subclavian v.
4. brachiocephalic v.
5. CN11
6. brachial plexus

Question 4

what are the boundaries of the anterior triangle

Answer 4

a: median line of neck
p: SCM
s: mandible

Question 5

what are the smaller triangular subdivisions of the anterior triangle?

Answer 5

1. submental
2. submandibular (paired)
3. carotid (paired)
4. muscular (paired)

Question 6

what are the boundaries of the submental triangle

Answer 6

i: body of hyoid
right lateral: right anterior belly of digastric muscle
left lateral: left anterior belly of digastric muscle
floor: mylohyoid

Question 7

what are the contents of the submental triangle

Answer 7

lymph nodes and small veins

Question 8

what are the boundaries of the submandibular triangles?

Answer 8

s: inferior border of mandible
a: anterior belly of digastric
p: posterior belly digastric

Question 9

what re the contents of the submandibular triangle

Answer 9

1. submandibular salivary gland
2. CN 12
3. CN 5 after it has left V3 - n. to mylohyoid

Question 10

what are the boundaries of the carotid triangles?

Answer 10

s: superior belly digastrics
inferior medial: superior belly of omohyoid
inferior lateral: SCM

Question 11

what are the contents of the carotid triangles

Answer 11

1. common carotid
2. thyroid
3. carotid body and sinus
4. internal jugular v.
5. CN 11, 12, cervical plexus, CN 10

Question 12

what are the boundaries of the muscular triangle

Answer 12

m: medial plane of neck
superior lateral: superior belly of omohyoid
inferior lateral: SCM

Question 13

what are the contents of the muscular triangle

Answer 13

1. thyroid gland
2. parathyroid glands
3. larynx and trachea