triangle of the neck

Question 1

Occipital triangle(5)

Answer 1

external jugular veins
cervical plexus 
accessory nerve
transverse cervical artery
cervical lymph nodes

Question 2

Suparclavicular triangle(4)

Answer 2

Subclavian artery
subclavian veins
supraclavicular artery
supraclavicular lymph nodes

Question 3

Submandibular triangle(5)

Answer 3

Submandibular glands
submandibular lymph node
hypoglossal nerve
mylohyoid nerve
facial artery and vein(part)

Question 4

Submental triangle(2)

Answer 4

Submental lymph nodes

anterior jugular veins.(small vein)

Question 5

Carotid triangle(11)

Answer 5

carotid sheath:
-common carotid artery 
-internal jugular veins
-vagus nerve
external carotid artery 
hypoglossal nerve 
ansa cervicalis(superior root)
accessory nerve,
thyroid gland, 
larynx and pharynx, 
deep cervical lymph nodes and 
branches of the cervical plexus

Question 6

Muscular triangle(4)

Answer 6

Sternothyroid and sternohyoid muscles, thyroid and parathyroid glands.