Anatomy of the neck

Question 1

What level is the hyoid bone

Answer 1

C3

Question 2

What is fascia

Answer 2

Membranous connective tissue

Question 3

Where is the sheath located

Answer 3

Posterior to the sternocleidomastoid

Question 4

Which infra hyoid muscles are innervated by the Sansa cervicalis

Answer 4

Both bellies of omohyoid, stylohyoid, sternothyoid

Question 5

What are the infra hyoid muscles

Answer 5

Found below hyoid bone

Superior belly of Omohyoid
Inferior belly of Omohyoid 
Sternohyoid 
Sternothyoid 
Thyrohyoid

Question 6

What are the supra hyoid muscles

Answer 6

Found above hyoid bone

Anterior belly of digastric 
Posterior belly of digastric 
Mylohyoid 
Geniohyoid
Stylohyoid

Question 7

What are the 4 anterior triangles of the neck

Answer 7

Carotid
Submental
Submandibular
Muscular

Question 8

What is the posterior triangle of the neck

Answer 8

Posterior triangle

- split into two by the inferior belly of the omohyoid muscle: occipital and subclavian

Question 9

Where is investing

Answer 9

The roof of the neck

Question 10

Where is the visceral fascia

Answer 10

The floor of the neck

Question 11

What happens with the common carotid

Answer 11

Bifurcates within the anterior triangle into the internal and external carotid branches

Question 12

Boundaries of the carotid triangle

Answer 12

Superior: Posterior belly of digastric
Inferior: Superior belly of omohyoid
Lateral: Medial border of sternocleidomastoid
Roof: Skin, superficial and platysma
Floor: Thyrohyoid muscle, hyoglossus and constrictor muscles of the pharynx

Question 13

Contents of the carotid triangle

Answer 13

Common carotid artery - bifurcates, internal jugular veins and hypoglossal and vagus nerves

Question 14

Boundaries of the submental triangle

Answer 14

Inferior: Hyoid bone
Medially: Midline of neck
Laterally: Anterior belly of digastric

Question 15

Contents of the submental triangle

Answer 15

Submental lymph nodes

Floor is formed from the mylohyoid muscle

Question 16

Boundaries of submandibular triangle

Answer 16

Superior: Body of the mandible
Anterior: Anterior belly of digastric
Posterior: Posterior belly of digastric

Question 17

Contents of submandibular triangle

Answer 17

Submandibular lymph nodes, internal and external carotid arteries and hypoglossal nerve, facial artery and vein pass through here

Question 18

Boundaries of the muscular triangle

Answer 18

Superior: Hyoid bone
Medial: Midline of the neck
Supero - laterally: Superior belly of omohyoid
Infero - laterally: Inferior portion of sternocleidomastoid

Question 19

Contents of muscular triangle

Answer 19

Infra hyoid muscle, pharynx and the thyroid and parathyroid glands

Question 20

Posterior triangle of the neck

Answer 20

Posterior triangle, split into two by the inferior belly of omohyoid

Question 21

Boundaries of the posterior triangle

Answer 21

Anterior: Posterior border of sternocleidomastoid
Posterior: Anterior border of trapezius
Inferior: Middle 1/3 of the clavicle

Question 22

Contents of the posterior triangle

Answer 22

External jugular vein, pierces through investing fascia and empties into the subclavian vein