Arm Muscles

Question 1

Pectoralis Major M

Answer 1

Shoulder joint:
adduction
Medical Rotation
Flexion

Inn: Medial Pectoral N
Lateral Pectoral N

Cardio: Thoracoacromial A

Question 2

Pectoralis Minor M

Answer 2

Scapula Depression
aids in respiration because attaches to the coracoid process

inn: Medial Pectoral N

Blood supply: Thoracoacromial A

Question 3

Subclavius M

Answer 3

Depresses the clavicle

Inn: Nerve to subclavius or subclavian nerve

Blood supply: Thoracoacromial A

Question 4

Serratus Anterior M

Answer 4

Scapula protraction and rotation of glenoid cavity superiorly

inn: Long Thoracic

Blood supply: Lateral thoracic: upper part and thoracodorsal for the lower part

Question 5

Deltoid M

Answer 5

Shoulder joint:
Flexion, medial rotation, Abduction, Extension, and lateral rotation

Inn: Axillary n

Blood supply: Posterior circumflex humeral A
deltoid branch of thoracoacromial A

Question 6

Subscapularis M

Answer 6

Arm medial rotation
Rotator cuff muscle

inn: Upper subscapular N
Lower subscapular N

Blood supply: Subscapular A
Transverse cervical A

Question 7

Supraspinatus M

Answer 7

Shoulder joint:
Abduction, stabilizes the joint
rotator cuff muscle

Inn: Suprascapular n

Blood supply: Suprscapular A

Question 8

Infraspinatus M

Answer 8

Arm: lateral rotation
rotator cuff muscle

Inn: Suprascapular N

Blood supply: Suprascapular A
circumflex scapular A

Question 9

Teres Minor M

Answer 9

Shoulder joint: lateral rotation
rotator cuff muscle

Inn: Axillary

Blood supply: Posterior circumflex humeral A
Circumflex scapular A

Question 10

Teres Major M

Answer 10

Shoulder Joint: Medial Rotation

Inn: Lower subscapular A

Blood supply: Subscapular A
circumflex scapular A

Question 11

Biceps Brachii M

Answer 11

Short head: Coracoid process
Long head: supraglenoid tubercle

Forearm: supination
elbow: flexion
Shoulder joint: flexion

Inn: Musculocutaneous N

Blood supply: Brachial A

Question 12

Coracobrachialis M

Answer 12

Shoulder joint: Flexion and Adduction

inn: musculocutaneous N

Blood supply: Brachial A

Question 13

Brachialis M

Answer 13

Elbow: Flexion

Inn: Musculocutaneous N

Blood supply: Radial Recurrent A

Question 14

Triceps Brachii

Answer 14

Lateral head: Attach Radial groove
Medial head: attach radial Groove
Long head: most medial and attaches infra glenoid tubercle

Elbow:extension
Shoulder joint: Extension

Inn: Radial N

Blood supply: Profunda Brachii

Question 15

Anconeus M

Answer 15

Acts with Triceps Brachii: extends forearm and stabilizes elbow

Inn: Radial N

Blood supply: Deep Brachial A

Question 16

Pronator Teres M

Answer 16

Forearm: Pronation
Elbow: Flexion

Inn: Median N

Blood supply: Ulnar A

medial Humeral Epicondyle to the lateral aspect of the radius

Question 17

Flexor Carpi Radialis

Answer 17

Wrist: flexion and Abduction

medial humeral epicondyle to metacarpals 2/3

inn: Median N

Blood supply: Ulnar A

Question 18

Palmaris Longus M

Answer 18

Wrist: Fexion

medial humeral Epicondyle attaches to palmar Aponeurosis

inn: Median N

Blood supply: Ulnar A

Question 19

Flexor Digitorum Superficialis M

Answer 19

Middle Phalange 2-5 flexion

Attaches intermediate phalange of digits 2-5

inn: Median N

Blood supply: Ulnar artery

Question 20

Flexor Carpi Ulnaris M

Answer 20

wrist: flexion and adduction

Attaches to the pisiform, hook of the hammate, 5th metacarpal

inn: Ulnar N

Blood supply: Ulnar A

Question 21

Flexor Digitorum Profundus M

Answer 21

Distal Phalange 2-5 flexion

Attaches to the distal phalange 2-5

inn: Lateral part is the Anterior interosseous N
medial part: Ulnar N

Blood supply: Anterior Interosseus A

Question 22

Flexor Pollicis Longus

Answer 22

Distal phalange (thumb) flexion

attaches to the base of the distal phalanax of the pollux

inn: Anterior interosseous N of the median N

Blood supply: Anterior Interosseus A

Question 23

Pronator Quadratus M

Answer 23

forearm: Pronation

attaches to radius and ulna distally

inn: Anterior interosseus branch of the median N

Blood supply: Anterior interosseus A

Question 24

Brachioradialis

Answer 24

Elbow flexion

lateral humeral supracondylar ridge to the lateral aspect of the distal radius

inn: Radial N

Blood supply: Radial Recurrent

Question 25

Extensor Carpi Radialis Longus M

Answer 25

lateral supracondylar ridge to meta carpal 2 Wrist: extension and ABduction inn: Radial N Blood supply: Radial A

Question 26

Extensor Carpi Radialis brevis

Answer 26

Wrist extension and ABduction Humerus lateral epicondyle to base of metacarpal 3 Inn: Deep Radial N Blood supply: Radial A

Question 27

Extensor Digitorum M

Answer 27

attaches to digits 2-5 on all metacarpophalangeal, proximal, and distal, interphalangeal joints inn: Posterior interosseous branch of the Radial N Blood supply: Posterior Interosseous

Question 28

Extensor Digiti minimi

Answer 28

Extend all phalanges of digit 5 Attaches to digit 5 from Lateral humeral epicondyle inn: Posterior interosseous N Blood supply: Posterior Interosseus A

Question 29

Extensor Carpi Ulnaris

Answer 29

Wrist: Extension and Adduction goes form lateral Humeral Epicondyle to the base of the 5th metacarpal inn: Posterior interosseus N of the Radial nerve Blood supply: Ulnar Artery

Question 30

Supinator M

Answer 30

Forearm Supination Attaches from the lateral epicondyle and the ulna to the radius inn: Deep Radial N Blood supply: Radial Recurrent A

Question 31

Abductor pollicis longus

Answer 31

Thumb extension and abduction goes from the ulna and radius to the 1st metacarpal inn: posterior interosseous N blood supply: Posterior interosseous a

Question 32

Extensor Indicis M

Answer 32

digit 2 extension attaches to the extensor expansion of digit 2 inn: Posterior interosseous N Blood supply: Posterior Interosseus A

Question 33

Extensor Pollicis Longus

Answer 33

``` Distal Phalange (thumb) extension and ABduct the wrist ``` Ulna to the base of the distal Phalanx of the pollux inn: Posterior Interosseous N Blood supply: Posterior Interosseous A

Question 34

Extensor Pollicis Brevis M

Answer 34

Abduct the hand and extend the 1st metacarpal and proximal phalanges of the pollux inn: Posterior interosseous Nerve Blood supply: Posterior Interosseous A