Muscles of Scapular and Deltoid Region MT

Question 1

Subscapularis origin

Answer 1

Subscapular fossa

Question 2

Subscapularis insertion

Answer 2

lesser tubercle of the humerus

Question 3

subscapularis innervation

Answer 3

upper and lower subscapular nerves

Question 4

Subscapularis action

Answer 4

Medial rotation of the arm

Question 5

supraspinatus origin

Answer 5

supraspinous fossa

Question 6

supraspinatus insertion

Answer 6

greater tubercle of the humerus (superior facet)

Question 7

supraspinatus innervation

Answer 7

Suprascapular nerve (C5-C6)

Question 8

Supraspinatus action

Answer 8

abduction 0-15 degrees

Question 9

Infraspinatus origin

Answer 9

infraspinatus fossa

Question 10

infraspinatus insertion

Answer 10

greater tubercle of the humerus (middle facet)

Question 11

infraspinatus innervation

Answer 11

suprascapular nerve (C5-C6)

Question 12

infraspinatus action

Answer 12

Lateral rotation of the arm

Question 13

Teres Minor origin

Answer 13

upper lateral border of the scapula

Question 14

Teres minor insertion

Answer 14

greater tubercle of the humerus (inferior facet)

Question 15

teres minor innervation

Answer 15

axillary nerve (C5-C6)

Question 16

teres minor action

Answer 16

lateral rotation of the arm

Question 17

Teres major origin

Answer 17

lower lateral border of the scapula

Question 18

teres major insertion

Answer 18

crest of the lesser tubercle of the humerus

Question 19

teres major innervation

Answer 19

lower subscapular nerve

Question 20

teres major action

Answer 20

medial rotation, adduction and extention of arm

Question 21

Deltoid origin

Answer 21

lateral margin of the scapular spine, acromion, and clavicle

Question 22

deltoid insertion

Answer 22

deltoid tuberosity of the humerus

Question 23

deltoid innervation

Answer 23

axillary nerve (C5-C6)

Question 24

deltoid action

Answer 24

abduction 15-100 degrees, ant. fibers medial rotation and flexion of the arm, post. fibers lateral rotation, and extention of the arm

Question 25

Pectoralis Major origin

Answer 25

clavicle, sternum and ribs 1-6

Question 26

Pectoralis major insertion

Answer 26

crest of the greater tubercle of the humerus

Question 27

pectoralis major innervation

Answer 27

medial and lateral pectoral nerves

Question 28

pectoralis major action

Answer 28

medial rotation, adduction and flexion of the arm

Question 29

Pectoralis minor origin

Answer 29

ribs 3-5

Question 30

pectoralis minor insertion

Answer 30

coracoid process of the scapula

Question 31

pectoralis minor innervation

Answer 31

medial pectoral nerve

Question 32

pectoralis minor action

Answer 32

protraction of the scapula

Question 33

serratus anterior origin

Answer 33

ribs 1-9

Question 34

serratus anterior insertion

Answer 34

medial border of the scapula | costal surface

Question 35

serratus anterior innervation

Answer 35

long thoracic nerve (C5-C7)

Question 36

serratus anterior action

Answer 36

protraction and superior rotation of the lateral angle of the scapula holds scapula against the dorsal trunk