Muscles of the Arm (JO) : Module 9

Question 1

Name this muscle:
State its Origin(s), Insertion(s), Innervation(s), and Action(s)

Answer 1

Pronator Teres (superficial)
Origin: Humeral head: medial epicondyle of the humerus;
Ulnar head: coronoid process of ulna
Insertion: Midway along the lateral surface of radius
Innervation: Median nerve C6, C7
Action: Pronates forearm and flexes elbow

Question 2

Name this muscle:
State its Origin(s), Insertion(s), Innervation(s), and Action(s)

Answer 2

Flexor Carpi Radialis (superficial)
Origin: Medial epicondyle of the humerus
Insertion: Base of 2nd and 3rd metacarpals
Innervation: Median nerve C6, C7
Action: Flexes and abducts (radial deviation) the wrist joint

Question 3

Name this muscle:
State its Origin(s), Insertion(s), Innervation(s), and Action(s)

Answer 3

Palmaris Longus (superficial)
Origin: Medial epicondyle of the humerus
Insertion: Palmar aponeurosis
Innervation: Median nerve C7, C8
Action: Flexes the wrist joint and tightens the palmar aponeurosis

Question 4

Name this muscle:
State its Origin(s), Insertion(s), Innervation(s), and Action(s)

Answer 4

Flexor Carpi Ulnaris (superficial)
Origin:
Insertion:
Innervation:
Action:

Question 5

Name this muscle:
State its Origin(s), Insertion(s), Innervation(s), and Action(s)

Answer 5

Flexor Digitorum Superficialis (intermediate)
Origin:
Insertion:
Innervation:
Action:

Question 6

Name this muscle:
State its Origin(s), Insertion(s), Innervation(s), and Action(s)

Answer 6

Flexor Digitorum Profundus (deep)
Origin:
Insertion:
Innervation:
Action:

Question 7

Name this muscle:
State its Origin(s), Insertion(s), Innervation(s), and Action(s)

Answer 7

Flexor Pollicis Longus (deep)
Origin:
Insertion:
Innervation:
Action:

Question 8

Name this muscle:
State its Origin(s), Insertion(s), Innervation(s), and Action(s)

Answer 8

Pronator Quadratus (deep)
Origin:
Insertion:
Innervation:
Action: