Head and Neck Anato

Question 1

What composes the posterior triangle?

Answer 1

Occipital triangle

Omoclavicular/subclavian triangle

Question 2

What innervates the sternocleidomastoid & trapezius?

Answer 2

CN XI

Question 3

What innervates the anterior belly of digastric?

Answer 3

Mylohyoid nerve

Question 4

What innervates the posterior belly of digastric muscle’

Answer 4

Facial nerve

Question 5

What innervates the sternohyoid, sternothyroid and tithyroid?

Answer 5

Hypoglossal ansa nerve (C1)

Question 6

Where does the brachial plexus and subclavian artery arise?

Answer 6

Between the middle and anterior scalenes

Question 7

What is another name for hypoglossal ansa nerve?

Answer 7

Root of ansa cervicalsi

Question 8

What is the relationship btw. phrenic nerve & scalene?

Answer 8

Phrenic nerve is ANTERIOR to scalene

Question 9

Where does the thoracic duct drain into?

Answer 9

Left subclavian vein

Question 10

What does the transverse cervical nerve supply?

Answer 10

Skin of neck from anterior & lateral sides