Muscles Of The Humerus & Forearm

Question 1

Biceps Brachii

Answer 1

• Origin: coracoid process, glenoid
• Insertion: radial tuberosity
• Action: flex elbow & shoulder

Question 2

Brachialis

Answer 2

• Origin: distal humerus
• Insertion: coronoid process of ulna
• Action: flex elbow

Question 3

Brachioradialis

Answer 3

• Origin: distal humerus
• Insertion: radial styloid process
• Action: flex elbow

Question 4

Triceps Brachii

Answer 4

• Origin: scapula and shaft of humerus
• Insertion: olecranon process
• Action: extend elbow

Question 5

Flexor digitorum superfacialis

Answer 5

• Origin: medial epicondyle of humerus
• Insertion: phalanges
• Action: flex fingers and wrist

Question 6

Flexor carpi ulnaris

Answer 6

• Origin: medial epicondyle of humerus
• Insertion: carpals
• Action: flex and adduct wrist

Question 7

Flexor carpi radialis

Answer 7

• Origin: medial epicondyle of humerus
• Insertion: metacarpals
• Action: flex and abduct wrist

Question 8

Palmaris Longus(flexor)

Answer 8

• Origin: medial epicondyle of humerus
• Insertion: flexor retinaculum
• Action: flex wrist

Question 9

Extensor digitorum

Answer 9

• Origin: Lateral epicondyle of humerus
• Insertion: phalanges
• Action: extend fingers

Question 10

Extensor carpi radialis longus

Answer 10

• Origin: Lateral epicondyle of humerus
• Insertion: metacarpal 2
• Action: extend and abduct wrist

Question 11

Extensor carpi ulnaris

Answer 11

• Origin: Lateral epicondyle of humerus
• Insertion: metacarpal 5
• Action: extend and adduct wrist