Triangles of the Neck

Question 1

What 4 triangles make up the anterior triangle of the neck?

Answer 1

Submental, submandibular, carotid, and muscular

Question 2

What 2 triangles make up the posterior triangle of the neck?

Answer 2

Occipital and Supraclavicular/Omoclavicular

Question 3

What are the borders of the occipital triangle and what is inside it?

Answer 3

Posterior: Trapezius
Anterior: SCM
Inferior: Inferior belly of omohyoid

Main: external jugular vein, cervical plexus, accessory nerve, and trunks of the brachial plexus.

Transverse cervical artery
Cervical lymph nodes

Question 4

What are the borders of the omoclavicular triangle and what is inside it?

Answer 4

Posterior: Inferior belly of omohyoid
Anterior: SCM
Inferior: Clavicle

Main: Subclavian artery/vein, supraclavicular lymph nodes

Suprascapular artery

Question 5

What are the borders of the submandibular triangle and what is inside it?

Answer 5

Posterior: Posterior belly of digastric
Anterior: Anterior belly of digastric
Superior: Inferior border of mandible

Main: Submandibular glands and lymph nodes, Hypoglossal nerve, and Facial artery/vein

Mylohyoid nerve

Question 6

What are the borders of the submental triangle and what is inside it?

Answer 6

Laterally: Anterior belly of digastric
Midline: Midline of neck/other anterior belly of digastric
Inferior: hyoid

Main: Submental lymph nodes

Veins that feed anterior jugular vein

Question 7

What are the borders of the carotid triangle and what is inside it?

Answer 7

Superior: Posterior belly of digastric
Anterior: Superior belly of omohyoid
Posterior: SCM

Main:
Carotid Sheath, which contains the carotid arteries, internal jugular vein, and vagus nerve
Hypoglossal nerve, accessory nerve, thyroid gland, larynx, deep cervical lymph nodes

Superior root of ansa cervicalis
Cervical Plexus

Question 8

What is the highest point of a carotid endarterectomy?

Answer 8

When you hit the hypoglossal nerve.

Question 9

What is most anterior, the carotid or the internal jugular?

Answer 9

Both carotids based on 2nd view in ppt

Question 10

What are the borders of the muscular triangle and what does it contain?

Answer 10

Superior belly of omohyoid
SCM
Sternohyoid

Main: Thyroid and parathyroid glands

Sternohyoid & sternothyroid

Question 11

If I wanted to perform a carotid endarterectomy, which triangle would I enter and what are my landmarks?

Answer 11

Carotid triangle
Superior belly of omohyoid, SCM, and posterior belly of digastric.

Question 12

If I wanted a submental lymph node biopsy, what triangle would I enter and what are my landmarks?

Answer 12

Submental triangle
Anterior belly of the digastric, hyoid, and midline of neck

Question 13

If I hit the hypoglossal nerve, what triangles could I have been in?

Answer 13

Carotid or submandibular

Question 14

What divides the anterior and posterior triangles of the neck?

Answer 14

The SCM

Question 15

If I suddenly lost sensation in my upper R arm, which triangle did I hit and what nerve?

Answer 15

Occipital triangle, which contains the trunks of the brachial plexus

Question 16

If my face began showing pallor, which artery did I probably injure and what triangle is it in?

Answer 16

Most likely my facial artery, located in my submandibular triangle.

Question 17

If I wanted a lymph node biopsy from anywhere in my neck, what triangles could I use?

Answer 17

Main: Submandibular (Submandibular lymph nodes)
Submental (Submental lymph nodes)
Carotid (Deep cervical lymph nodes)
Omoclavicular (Supraclavicular lymph nodes)

Occipital (Cervical lymph nodes)

Question 18

What are the 3 main arteries I can find in the neck and what neck triangles are they found in?

Answer 18

Facial (Submandibular Triangle)
Carotid (Carotid Triangle)
Subclavian (Omoclavicular Triangle)