Week three OIA Upper E

Question 1

Origin of Bicep

Answer 1

Short head: coracoid process
Long head: supraglenoid tubercle

Question 2

Insertion of bicep

Answer 2

radial tuberosity and bicipital aponeurosis

Question 3

Action of bicep

Answer 3

flexion of the elbow and shoulder, supination of the forearm

Question 4

Origin of tricep

Answer 4

Long: infra glenoid tubercle
Lateral: post, approx 1/2 of humerus
Medial: post, distal 1/2 humerus

Question 5

Insertion of tricep

Answer 5

olecranon process

Question 6

Action of tricep

Answer 6

All: Extend elbow
Long: extension and adduction of the shoulder

Question 7

Origin of brachialis

Answer 7

anterier, distal 1/2 humerus

Anterior to the distal 1/2

Question 8

Insertion of brachialis

Answer 8

tuberosity and coronoid of the ulna

Tub of coors Light

Question 9

Action of brachialis

Answer 9

flexion of elbow

Question 10

Origin of anconeus

Answer 10

lateral epicondyle of the humerus

Question 11

Insertion of anconeus

Answer 11

olecranon process, the lateral edge of the ulnar shaft

Anconeus = olacronon process

Question 12

Action of anconeus

Answer 12

extension of elbow

Question 13

Origin of brachioradialis

Answer 13

proximal 2/3 lateral supracondylar ridge of humerus

Question 14

Insertion of brachioradialis

Answer 14

radial styloid process

Radialis = radialis

Question 15

Action of brachioradialis

Answer 15

Flexion of the elbow assists in resisted supination and pronation

Question 16

Origin of Supinator

Answer 16

lateral epicondyle of the humerus. Radial collateral ligament. Annular ligament.

Laterale is epic, radial is cold and annular eclips.

Question 17

Insertion of Supinator

Answer 17

Anterior, lateral surface of proximal 1/3 radius

Question 18

Action of Supinator

Answer 18

supination of forearm

Question 19

Origin of extensor carpi radialis longus

Answer 19

Distal 1/3 of the lateral supracondylar ridge of the humerus

Lateral is super distal to 1/3 of the ridge

Question 20

Insertion of extensor carpi radialis longus

Answer 20

The base of 2nd metacarpal, dorsal surface

Question 21

Action of extensor carpi radialis longus

Answer 21

extension and abduction of the wrist, flexion of elbow

Question 22

Origin of extensor carpi radialis brevis

Answer 22

common extensor tendon lateral epicondyle of humerus

Question 23

Insertion of extensor carpi radialis brevis

Answer 23

The base of 3rd metatarsal

Question 24

Action of extensor carpi radialis brevis

Answer 24

Extension and abduction fo wrist, assist in flexion of elbow

Question 25

Origin of Extensor pollicis Brevis

Answer 25

posterior surface of radius and interosseous membrane

Question 26

Insertion of Extensor pollicis Brevis

Answer 26

The base of the proximal phalange of the thumb

Question 27

Action of Extensor pollicis Brevis

Answer 27

extension of thumb and CMC and MCP, abduction of wrist

Question 28

Origin of Extensor pollicis longus

Answer 28

Posterior surface of middle 1/3 of ulna

Question 29

Insertion of extensor pollicis longus

Answer 29

Base of distal phalange of thumb

Question 30

Action of extensor pollicis longus

Answer 30

Extension of thumb, CMC and MCP, IP. Abduction of wrist.

Question 31

Origin of extensor carpi ulnaris

Answer 31

common extensor tendon, lateral epicondyle of humerus

Question 32

Insertion of extensor carpi ulnaris

Answer 32

base of 5th metacarpal ## Footnote Carpi = 5

Question 33

Action of extensor carpi ulnaris

Answer 33

extension and adduction of wrist

Question 34

Origin of extensor digitorum

Answer 34

common extensor tendon, lateral epicondyle of humerus

Question 35

Insertion of extensor digitorum

Answer 35

middle and distal phalanges of 2-5th fingers

Question 36

Action of extensor digitorum

Answer 36

extends 2-5 fingers. Assist in the extension of the wrist

Question 37

Origin of extensor digiti minimi

Answer 37

common extensor tendon, lateral epicondyle of humerus

Question 38

Insertion of extensor digiti minimi

Answer 38

middle and distal phalange of 5th finger

Question 39

Action of extensor digiti minimi

Answer 39

extension of 5th finger, assist in extension and adduction of wrist

Question 40

Origin of extensor indicis

Answer 40

posterior surface of distal shaft of ulna

Question 41

Insertion of extensor indicis

Answer 41

Tendon of extensor digitorum at level of 2nd metacarpal

Question 42

Action of extensor indicis

Answer 42

Extension of 2nd finger, assist to adduction 2nd finger