Arm Origins and Insertions Flashcards Preview

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Flashcards in Arm Origins and Insertions Deck (21):
1

Anconeus

O: Posterior surface of external condyle of humerus
I: Olecranon and shaft of ulna
A: Elbow nxtension
N: Radial

2

Suprinator

O: Lateral condyle of humerus and supinator crest of ulna
I: Lateral and anterior aspect of radius
A: Supination and extension of forearm
N: Radial

3

Brachialis

O: Lower half of anterior surface of humerus
I: Ulna, just below coronoid process on ulnar tuberosity
A: Elbow flexion
N: Musculocutaneous and usually radial

4

Brachioradialis

O: External supracondylar ridge of humerus
I: Styloid process of radius
A: Elbow flexion, half pronation from supination and half supination from pronation
N: Radial

5

Pronator Teres

O: Medial epicondylar ridge and medial side of coronoid process
I: Middle of lateral surface of shaft of radius
A: Pronation and elbow flexion
N: Median

6

Pronator Quadratus

O: Lower fourth and anterior border of ulna
I: Lower fourth of lateral anterior surface of shaft of radius
A: Pronation
N: Median

7

Flexor Carpi Radialis

O: Medial epicondyle of humerus
I: Second metacarpal on anterior, plus a slip to the third metacarpal
A: Wrist flexion and radial deviation, elbow flexion
N: Median

8

Palmaris Longus

O: Medial epicondlye of humerus
I: Palmar fascia and transverse carpal ligament
A: Wrist flexion, elbow flexion
N: Median

9

Flexor Carpi Ulnaris

O: Medial epicondyle of humerus, and proximal posterior surface of ulna
I: Pisiform, hamate, fifth metacarpal
A: Wrist flexion and ulnar deviation, elbow flexion

10

Flexor Digitorum Superficialis

O: Medial epicondyle of humerus and anterior oblique line of radius, coronoid process of ulna
I: Middle phalanges of 2nd to 5th fingers
A: Flexion of middle and proximal phalanges of foiur fingers, wrist flexion and elbow flexion
N: Median

11

Flexor Digitorum Profundus

O: Proximal 2/3's of the anterior and medial surface of the ulna
I: Terminal phalanges of 2nd to 5th fingers
A: Finger flexion, wrist flexion
N: Median and ulnar

12

Flexor Pollicis Longus

O: Volar surface of radius and interosseus membrane
I: Base of terminal phalanx of thumb
A: Flexes wrist and thumb
N: Median

13

Extensor Carpi Ulnaris

O: Lateral epicondyle of humerus and posterior lateral ulna
I: Fifth metacarpal (medial side of base)
A: Wrist extension and ulnar deviation
N: Radial

14

Extensor Carpi Radialis Longus

O: Lateral supracondylar ridge of humerus
I: Base of second metacarpal on dorsal surface
A: Wrist extension and radial deviation, elbow flexion
N: Radial

15

Extensor Carpi Radialis Brevis

O: Lateral epicondyle of humerus
I: Base of third metacarpal of dorsal surface
A: Wrist extension, radial deviation, elbow flexion
N: Radial

16

Extensor Digitorum

O: Lateral epicondlye of humerus
I: Four Tendons into extensor expansion of finger 2-5
A: Extension of metacarpophalangeal joints, wrist extension
N: Radial

17

Extensor Digiti Minimi

O: Lateral epicondyle of humerus
I: Dorsum of proximal phalanx of 5th finger and tendon of extensor digitorum
A: Extends and abducts fifth finger, wrist extension
N: Radial

18

Abductor Pollicis Longus

O: Posterior surface of radial and ulna
I: Base of fifth metacarpal
A: Extends 1st metacarpal, radial deviation
N: Radial

19

Extensor Pollicis Brevis

O: Posterior surface of radius, interosseus membrane
I: Posterior surface of first phalanx of thumb
A: Extends proximal phalanx of thumb and radial deviation
N: Radial

20

Extensor Pollicis Longus

O: Middle third of dorso-lateral surface of ulna, interosseus membrane
I: Base of second phalanx of the thumb
A: Extends distal phalanx of thumb, extends first metacarpal, radial deviation, wrist extension
N: Radial

21

Extensor Indicis

O: Dorsla surface of ulna from middle to lower portion and interosseus membrane
I: Second and third phalanges of index finger (via tendon of EDL)
A: Extends index finger, wrist extension
N: Radial