M System 2/23

Question 1

Extensor Carpi Ulnaris

Answer 1

Origin: Lateral Epicondyle of humerus and semilunar notch
Insertion: Proximal end of 5th metacarpal
Action: The extension of 5th digit and ulnar wrist

Question 2

Extensor Digitorium Lateralis

Answer 2

Origin: Lateral surface of humerus above lateral epicondyle
Insertion: 3rd and 4th digit tendons
Action: Extension of Digits

Question 3

Extensor Digitorium Communis

Answer 3

Origin: Lateral Surface of humerus above lateral epicondyle
Insertion: 3rd and 4th digit tendons
Action: Extends Digits

Question 4

Brachioradialis

Answer 4

Origin: Middle of Humerus
Insertion: Lower End of Radius and ligaments
Action: Rotates hand to supine position

Question 5

Extensor Carpi Radialis

Answer 5

Origin: Humerus
Insertion: 2nd and 3rd Metacarpals
Action: Extension of Hand

Question 6

Flexor Carpi Radialis

Answer 6

Origin: Medial Epicondyle of Humerus
Insertion: 2nd and 3rd metacarpals
Action: Flexion of Above Metacarpals

Question 7

Flexor Digitorium Superficialis

Answer 7

Origin: Medial Epicondyle of Humerus
Insertion: tendons to pads of palm and digits
Action: Flexor of Digits

Question 8

Flexor Digitorium Profundus

Answer 8

Origin: Ulna and humerus
Insertion: Basal Phalanges
Action: Flexor of Digits

Question 9

Flexor Carpi Ulnaris

Answer 9

Origin: Medial Epicondyle of Humerus/Olecranon Process
Insertion: Pisiform bone
Action: Flexes Ulnar side of wrist.