Posterior triangle of neck

Question 1

Skin of scalp and back of neck is supplied by what nerves?

Answer 1

dorsal rami of spinal nerves C2-C5

Question 2

SKin of anterior and lateral aspects of neck is supplied by what nerves?

Answer 2

ventral rami of C2-C4 spinal nerves

Question 3

What are the cutaneous branches of the cervial plexus?

Answer 3

Lesser occipital nerve (C2 or C2, C3)
Great auricular nerve (C2,C3)
Transverse cervical nerve (C2, C3)
Supraclavicular nerves (C3,C4)

Question 4

Large, flat, thin, muscle embedded in superficial fascia of neck, covers upper parts of pectoralis major and deltoid muscles.

Answer 4

Platysma

Question 5

Vein that is a superficial structure in the neck, runs vertically. This vein starts below the ear and drains into the subclavian vein. Originates with posterior auricular vein and posterior branch of retromandibular vein.

Answer 5

External Jugular vein

Question 6

Several small veins under chin (mental region), drains down midline until base of neck where it turns behind the sternocleidomastoid where it goes into external jugular vein.

Answer 6

Anterior Jugular Vein

Question 7

Muscle with two heads that passes superiorly, posteriorly, and laterally, then inserts into mastoid process.

Answer 7

Sternocleidomastoid

Question 8

What does sternocleidomastoid muscle do?

Answer 8

Lateral flexion of head and neck to same side as contracting muscle.

Question 9

What are the boundaries of the posterior triangle of the neck?

Answer 9

Anterior: posterior border of sternocleidomastoid
Posterior: anterior border of trapezius
Inferiorly: 1/3 of clavicle
Floor: Splenius capitis, superficial fascia, platysma, and Scalene muscles

Question 10

What do scalene muscles do?

Answer 10

They hold your neck up and move your neck

Question 11

Structures anterior to scalenus anterior:

Answer 11

Subclavian vein, phrenic nerve, cervical and suprascapular arteries, terminal part of thoracic duct on left side. attches to 1st rib

Question 12

Structures Posterior to scalenus anterior:

Answer 12

Brachial plexus, subclavian artery

Question 13

What muscle is the longest of the scalene muscles?

Answer 13

Scalenus medius, attaches to 1st rib

Question 14

What muscle is smallest of scalene muscles?

Answer 14

Scalene posterior attaches to 2nd rib

Question 15

What muscle has inferior and superior bellies connected with an intermediate tendon?

Answer 15

Omohyoid