Superficial Back, Deltoid, Scapular Regions

Question 1

Trapezius innervation

Answer 1

CN XI - Accessory nerve

Question 2

Supraspinatus and infraspinatous innervation

Answer 2

Suprascapular nerve

Question 3

Teres minor and deltoid innervation

Answer 3

Axillary nerve

Question 4

Rhomboid major and minor innervation

Answer 4

Dorsal scapular nerve

Question 5

Levator scapulae innervation

Answer 5

Dorsal scapular nerve

Question 6

Latissimus dorsi innervation

Answer 6

Thoracodorsal nerve

Question 7

Teres major innervation

Answer 7

Lower subscapular nerve

Question 8

Serratus anterior innervation

Answer 8

Long thoracic nerve

Note: if nerve is damaged, winged scapula results

Question 9

What muscles make up the rotator cuff?

Answer 9

SITS:
Supraspinatous
Infraspinatous
Teres minor
Subscapularis

Question 10

What is the neurovascular bundle composed of?

Answer 10

Artery, vein, nerve

Question 11

What is the function of the rhomboid muscles?

Answer 11

Retract the scapula and rotate it to depress the glenoid cavity.

Question 12

What is the triangle of auscultation?

Answer 12

Triangle formed by the trapezius, scapula (medial border), and latissimus dorsi.

Good for listening to the lungs.

Question 13

What is an important function of the deltoid muscle?

Answer 13

Abductor of the upper extremity.

Question 14

What are the boundaries of the quadrilateral/quadrangular space?

Answer 14

Superior: teres minor
Inferior: Teres major
Medial: long head triceps
Lateral: humerus

*axillary nerve and posterior circumflex vessels pass thru this space