Muscles of Arm Flashcards Preview

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Flashcards in Muscles of Arm Deck (20):
1

Biceps Brachii Origin-2

Short Head: Coracoid process

Long Head: Supraglenoid tubercle of scapula

2

Biceps Brachii Insertion

Tuberosity of radius

Fascia of forearm via bicipital aponeurosis

3

Biceps Brachii Innervation

Musculocutaneous Nerve

C5, C6

4

Biceps Brachii Action-4

-Supinates forearm
-Flexes forearm
-Flexes arm
-Short head resists dislocation of shoulder

5

Brachialis Origin

Distal half of anterior surface of humerus

6

Brachialis Insertion-2

-Coronoid process
-Tuberosity of ulna

7

Brachialis Innervation

Musculocutaneous Nerve

C5, C6

8

Brachialis Action

Flexes forearm

9

Coracobrachialis Origin

Coracoid process

10

Coracobrachialis Insertion

Middle third of medial surface of humerus

11

Coracobrachialis Innervation

Musculocutaneous Nerve

C5, C6, C7

12

Coracobrachialis Action-3

Helps flex arm
Helps adduct arm
Resists dislocation of shoulder

13

Triceps Brachii Origin-3

Long head: Infraglenoid tubercle of scapula

Lateral head: Posterior surface of humerus, superior to radial groove

Medial head: Posterior surface of humerus, inferior to radial groove

14

Triceps Brachii Insertion-2

-Proximal end of olecranon of ulna
-Fascia of forearm

15

Triceps Brachii Innervation

Radial nerve

C6, C7, C8

16

Triceps Brachii Action-3

-Extends forearm
-Long head extends arm
-Long head resists dislocation of humerus

17

Anconeus Origin

Lateral epicondyle of humerus

18

Anconeus Insertion-2

-Lateral surface of olecranon
-Superior part of posterior surface of ulna

19

Anconeus Innervation

Radial Nerve

C7, C8, T1

20

Anconeus Action-3

-Assists triceps in extending forearm
-Stabilizes elbow joint
-Abducts ulna during pronation