Origin Insertion Innervation (getbodysmart)

Question 1

Teres major origin

Answer 1

Lower lateral border and inferior angle of the scapula.

Question 2

Teres major Insertion

Answer 2

Medial lip of the (bicipital) groove of the anterior humerus.

Question 3

Teres major Innervation

Answer 3

Lower subscapular nerve.
C5, C6, and C7.

Question 4

Teres major Action

Answer 4

ADD, IR, EXT humerus

Question 5

Teres minor Origin

Answer 5

Middle part of the lateral (axillary) border of the scapula.

Question 6

Teres minor Insertion

Answer 6

Inferior aspect of greater tubercle of humerus.

Question 7

Teres minor Action

Answer 7

ER, weak ADD humerus

Question 8

Teres minor Innervation

Answer 8

Axillary nerve. C5 and C6.

Question 9

Supraspinatus Origin

Answer 9

Supraspinous fossa of the scapula.

Question 10

Supraspinatus Insertion

Answer 10

Superior aspect of the greater tubercle of the humerus.

Question 11

Supraspinatus Action

Answer 11

ABD, stabilization

Question 12

Supraspinatus Innervation

Answer 12

Suprascapular nerve.
C5 and C6.

Question 13

Infraspinatus Origin

Answer 13

Infraspinous fossa of the scapula.

Question 14

Infraspinatus Insertion

Answer 14

Middle part of the greater tubercle of the humerus.

Question 15

Infraspinatus Action

Answer 15

ER, stabilization

Question 16

Infraspinatus Innervation

Answer 16

Suprascapular nerve.
C5 and C6.

Question 17

Subscapularis origin

Answer 17

subscapular fossa

Question 18

Subscapularis insertion

Answer 18

Lesser tubercle of humerus.

Question 19

Subscapularis action

Answer 19

IR, dynamic shoulder stability, prevent scapular winging

Question 20

Subscapularis innervation

Answer 20

Upper and lower subscapular nerves.
C5, 6, 7

Question 21

Pectoralis Major Origin

Answer 21

Clavicular head: medial half of the clavicle.
Sternal head: sternum, upper costal cartilages (1-6), and the aponeurosis of the external oblique.

Question 22

Pectoralis Major Insertion

Answer 22

Lateral lip of (bicipital) groove of the humerus.
+ Crest of the greater tubercle of the humerus.

Question 23

Pectoralis Major Action

Answer 23

clavicular head: flex
sternal head: ext when flexed
TGT: IR, ADD

Question 24

Pectoralis Major Innervation

Answer 24

Lateral pectoral nerve to the clavicular head.
C5, C6, C7

Medial pectoral nerve to the sternal head.
C8 and T1

Question 25

Pectoralis Minor Origin

Answer 25

Anterior surfaces of the sternal ends of ribs 3-5.

Question 26

Pectoralis Minor Insertion

Answer 26

Coracoid process of scapula

Question 27

Pectoralis Minor Action

Answer 27

scapular depression, protraction w ant tilt elevate rib cage (reverse)

Question 28

Pectoralis Minor Innervation

Answer 28

Medial pectoral nerve (C8, T1).

Question 29

Deltoid Origin

Answer 29

Anterior (clavicular) head: anterior surface of the lateral clavicle. Middle (acromial) head: acromion process and spine of the scapula.

Question 30

Deltoid Insertion

Answer 30

Deltoid tuberosity of the humerus

Question 31

Deltoid Action

Answer 31

Flex, IR, ABD

Question 32

Deltoid Innervation

Answer 32

Axillary nerve C5, 6

Question 33

Serratus Anterior Origin

Answer 33

Anterior surfaces of the first 8 or 9 ribs.

Question 34

Serratus Anterior Insertion

Answer 34

Anterior surface of medial border of scapula.

Question 35

Serratus Anterior Action

Answer 35

ABD (protracts) scapula, upwardly rotates it while abducting the arm; stabilizes scapula by holding it to chest wall.

Question 36

Serratus Anterior Innervation

Answer 36

Long thoracic nerve C5, 6, 7

Question 37

Biceps Brachii Origin

Answer 37

Long head: supraglenoid tubercle of the scapula. Short head: coracoid process of the scapula.

Question 38

Biceps Brachii Insertion

Answer 38

Radial tuberosity. Bicipital aponeurosis to the fascia on the medial side of the forearm.

Question 39

Biceps Brachii Action

Answer 39

Flex shoulder (weak) Flex elbow Supinate FA

Question 40

Biceps Brachii Innervation

Answer 40

Musculocutaneous nerve. C5, 6, 7

Question 41

Coracobrachialis Origin

Answer 41

Coracoid process of scapula.

Question 42

Coracobrachialis Insertion

Answer 42

Mid-shaft of medial humerus.

Question 43

Coracobrachialis Action

Answer 43

Flex, ADD

Question 44

Coracobrachialis Innervation

Answer 44

Musculocutaneous nerve. C5, C6, and C7.

Question 45

Brachialis Origin

Answer 45

Anterior, distal half of humerus.

Question 46

Brachialis Insertion

Answer 46

coronoid process, ulnar tuberosity

Question 47

Brachialis Action

Answer 47

Flex FA at elbow

Question 48

Brachialis Innervation

Answer 48

Musculocutaneous nerve C5, C6