Chest And Upper Arm

Question 1

Pectoralis Major

Origin

Answer 1

Clavicular head: medial 1/2 of clavicle

Sternocostal head: anterior surface of sternum, 1st-6th costal cartilages, aponeurosis external oblique m.

Question 2

Pectoralis Major

Insertion

Answer 2

Lateral lip intertubercular groove of humerus

Question 3

Pectoralis Major

Innervation

Answer 3

Lateral pectoral N. (C5-C7)

Medial Pectoral N. (C8-T1)

Question 4

Pectoralis Major

Action

Answer 4

Humerus: adduction, medial rotation
Sternal head: helps extend a flexed humerus
Clavicular head: helps flex humerus

Question 5

Pectoralis Minor

Origin

Answer 5

3rd-5th ribs anteriorly

Question 6

Pectoralis Minor

Insertion

Answer 6

Coracoid process

Question 7

Pectoralis Minor

Innervation

Answer 7

Medial Pectoral N. (C8-T1)

Question 8

Pectoralis Minor

Action

Answer 8

Scapula: protraction

Closed Chain: Elevate Ribs

Question 9

Subclavius

Origin

Answer 9

1st Rib at costochondral junction

Question 10

Subclavius

Insertion

Answer 10

Middle 1/3 clavicle inferior surface

Question 11

Subclavius

Innervation

Answer 11

Nerve to Sublclavius (C5-C6)

Question 12

Subclavius

Action

Answer 12

Clavicle: depression

Question 13

Coracobrachialis

Origin

Answer 13

Coracoid process of scapula

Question 14

Coracobrachialis

Insertion

Answer 14

Middle 1/3 of medial humerus

Question 15

Coracobrachialis

Innervation

Answer 15

Musculocutaneous N. (C5-C7)

Question 16

Coracobrachialis

Action

Answer 16

Humerus: Flexion, adduction

Question 17

Biceps Brachii

Origin

Answer 17

Long head: Supraglenoid tubercle of scapula

Short head: Coracoid Process

Question 18

Biceps Brachii

Insertion

Answer 18

Radial Tuberosity, Bicipital aponeurosis

Question 19

Biceps Brachii

Innervation

Answer 19

Musculocutaneous N. (C5-C7)

Question 20

Biceps Brachii

Action

Answer 20

Humerus: Flexion
Forearm: Flexion, Supination

Question 21

Brachialis

Origin

Answer 21

Distal 1/2 of anterior humerus

Question 22

Brachialis

Insertion

Answer 22

Ulnar Tuberosity

Coronoid process

Question 23

Brachialis

Innervation

Answer 23

Musculocutaneous N. (C5-C7)

Question 24

Brachialis

Action

Answer 24

Forearm: Flexion

Question 25

Triceps Brachii Origin

Answer 25

Long head: infraglenoid tubercle of scapula Lateral head: posterior surface of lateral humerus superior to radial groove. Medial head: posterior surface of medial humerus inferior to radial groove.

Question 26

Triceps Brachii Insertion

Answer 26

Olecranon process of ulna

Question 27

Triceps Brachii Innervation

Answer 27

Radial N. (C5-T1)

Question 28

Triceps Brachii Action

Answer 28

Humerus: Extension Forearm: Extenstion

Question 29

Anconeus Origin

Answer 29

Lateral epicondyle of humerus

Question 30

Anconeus Insertion

Answer 30

Lateral surface of olecranon process

Question 31

Anconeus Innervation

Answer 31

Median N. (C5-T1)

Question 32

Anconeus Action

Answer 32

Forearm: Extension

Question 33

Pronator Teres Origin

Answer 33

Humeral head: medial epicondyle of humerus | Ulnar head: coronoid process of ulna

Question 34

Pronator Teres Insertion

Answer 34

Lateral surface of radius

Question 35

Pronator Teres Innervation

Answer 35

Median N. (C5-T1)

Question 36

Pronator Teres Action

Answer 36

Forearm: flexion, pronation

Question 37

Flexor Carpi Radialis Origin

Answer 37

Medial epicondyle of humerus

Question 38

Flexor Carpi Radialis Insertion

Answer 38

Base of 2nd metacarpal

Question 39

Flexor Carpi Radialis Innervation

Answer 39

Median N. (C5-T1)

Question 40

Flexor Carpi Radialis Action

Answer 40

Wrist: Flexion, radial deviation

Question 41

Palmaris Longus Origin

Answer 41

Medial Epicondyle of humerus

Question 42

Palmaris Longus Insertion

Answer 42

Flexor Retinaculum, palmar aponeurosis

Question 43

Palmaris Longus Innervation

Answer 43

Median N. (C5-T1)

Question 44

Palmaris Longus Action

Answer 44

Wrist: Flexion