Exam 2 - Review Questions

Question 1

What nerves innervate the trapezius?

Answer 1

Cranial nerve XI and ventral rami of 3rd and 4th cervical nerves

Question 2

What nerve innervates the latissimus dorsi?

Answer 2

Thoracodorsal nerve

Question 3

What nerve innervates the levator scapulae?

Answer 3

Cervical nerves C3-5 and dorsal scapular nerve (C5)

Question 4

What nerve innervates the rhomboids?

Answer 4

Dorsal scapular nerve

Question 5

What nerve innervates the subclavius?

Answer 5

Nerve to subclavius

Question 6

What nerves innervate the pectoralis major?

Answer 6

Lateral and medial pectoral nerves, clavicular head, sternal head

Question 7

What nerve innervates the pectoralis minor?

Answer 7

Medial pectoral nerve

Question 8

What nerve innervates the serratus anterior?

Answer 8

Long thoracic nerve

Question 9

What nerve innervates the deltoid?

Answer 9

Axillary nerve

Question 10

What nerve innervates the teres major?

Answer 10

Low subscapular nerve

Question 11

What muscles make up the rotator cuff?

Answer 11

SITS: Supraspinatus, Infraspinatus, Teres minor, Subscapularis

Question 12

What is serves as the insertion for the supraspinatus muscle?

Answer 12

Superior facet of greater tubercle of humerus

Question 13

What serves as the insertion for the infraspiantus?

Answer 13

Middle facet of greater tubercle of humerus

Question 14

What serves as the insertion for the teres minor?

Answer 14

Inferior facet of greater tubercle of humerus

Question 15

What serves as the inerstion for the subscapularis?

Answer 15

Lesser tubercle of the humerus

Question 16

What muscles is the most important in rotating the greater tubercle from the acromion during full arm elevation?

Answer 16

Infraspinatus (i.e. biggest muscle = biggest contributor)

Question 17

What muscle is necessary for the first few degrees of arm elevation?

Answer 17

Supraspinatus

Question 18

Winging of the scapule may be the result of an injury to which nerve?

Answer 18

Long thoracic nerve