Lecture 2 (Posterior Triangle)

Question 1

What is the role of fascia?

Answer 1

Protection and slipperiness to allow structure to slide over each other

Question 2

What’s the two types of fascia

Answer 2

Superficial fascia & deep fascia (form carotid sheath and strong enough for suture

Question 3

Name the three structure found in carotid sheath?

Answer 3

Vagus nerve, internal jugular vein, common carotid artery

Question 4

What structure does the pretracheal enclose

Answer 4

Visceral are trachea oesophagus and thyroid gland
Muscular is infrahyoid muscle

Question 5

What are the subdivisions of lateral cervical region of posterior triangle of the neck?

Answer 5

Occipital triangle, superior belly of omohyiod muscle and subclavian region

Question 6

What nerve innervate the sternocleidomastoid muscle?

Answer 6

Spinal accessory nerve CN XI

Question 7

What’s the action of SCM?

Answer 7

Draw head forward both muscle works (bilaterally)
Tilt head towards ipsilateral shoulder while turning head unilaterally

Question 8

Whats the action of trapezius muscle, what nerve innervate this muscle?

Answer 8

Assists in rotating scapula during abduction of humerus; upper fibres elevate, middle adduct & lower depress scapula
Spinal accessory nerve CNXI

Question 9

Ansa cervicalis

Answer 9

Anterior rami of c1 to c3
Innervate infrahyoid muscles

Question 10

Cervical plexus

Answer 10

Anterior rami of c1, C2toC4

Question 11

Internal jugular vein drains into external jugular vein which drains into subclavian vein

Answer 11

Hehehe