Unit 2: Lecture

Question 1

Superficial layer of flexors

Answer 1

Pronator teres, flexor carpi radialis, flexor carpi ulnaris, palmaris, longus; Common origin medial epicondyle

Question 2

Pronator Teres

Answer 2

I: middle of radius; A: pronate and flexes; N: Median; Art: ulnar and Anterior recurrent ulnar

Question 3

Flexor Carpi Radialis

Answer 3

I: base of 2nd metacarpal; A: flexes and abducts; N: Median; A: Ulnar

Question 4

Flexor carpi Ulnaris

Answer 4

I: pisiform, hamate, metacarple 5; A flexes, adduct; N: ulnar; Art: Ulnar

Question 5

Palmaris longus

Answer 5

I: flexor retinaculum, palmer aponeurosis; A: flex, tense aponeurosis; N: Median; A: ulnar

Question 6

Intermediate layer of flexors

Answer 6

Flexor Digitorum

Question 7

Flexor Digitorum

Answer 7

O: medial epicondyle, coronoid process I: 2-5 A: flexes fingers; N: median A: ulnar Does not go to distal end of finger tips!

Question 8

Deep Layers

Answer 8

Flexor digitorum profundus, Flexor pollicus longus, Pronator quadratus

Question 9

Flexor digitorum profundus

Answer 9

O: medial ulna, interosseus membrane; I: base of 2-5; N: Ulnar and median; A: ulnar and anterior interosseous

Question 10

Flexor pollicus longus

Answer 10

O: anterior radius, interosseus membrane A: flex thumb; N: median; A: anterior interosseus

Question 11

Pronator quadratus

Answer 11

O, I: ulna, radius; N: median; A: anterior interosseous

Question 12

Brachioradialis

Answer 12

O: Humerus; I: radius A: flexion; N: radial; A: radial recurrent; Does nothing to wrist

Question 13

Superficial extensors

Answer 13

Extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris

Question 14

Superficial extensors originate from common tendon except?

Answer 14

Extensor carpi radialis longus

Question 15

Extensor carpi radialis longus

Answer 15

O: humerus; I: 2nd metacarpal; A: extend and abduct; N: radial; A: Radial

Question 16

Extensor carpi radialis brevis

Answer 16

O: humerus; I: 3rd metacarpal; A: extend and abduct; N: deep radial; A: radial

Question 17

Extensor digitrorum

Answer 17

O: humerus humerus; I: digits; A: extends digits and wrist; N: radial; A: radial

Question 18

Extensor carpi ulnaris

Answer 18

O: Humerus and ulna; I: pinkie; A: extend and adduct; N: radial; A: ulnar

Question 19

Extensor digiti minimi

Answer 19

O: humerus; I: pinkie; A: extends; N: radial; A: interosseous recurrent

Question 20

Deep extensors

Answer 20

Supinator, Abductor pollicus longus, extensor pollicus longus, extensor pollicus brevis, extensor indicis

Question 21

Supinator

Answer 21

O: humerus, ulna, ligaments; I: radius; N: deep radial; A: recurrent interosseous

Question 22

Abductor pollicus longus

Answer 22

O: ulna, radius, interosseous I: thumb; A: Abducts thumb and extends it at carpometacarpal joint; N: radial; A: posterior interosseus

Question 23

Extensor pollicus brevis

Answer 23

O: radius; I: base of thumb; A: extends; N: radial; A: posterior interosseus

Question 24

Extensor pollicus longus

Answer 24

O: ulna, i.m. I: thumb; A: extends; N: radial; A: posterior interosseus

Question 25

Extensor indicis

Answer 25

O: ulna, i.m. I: 2nd digit; A: extends; N: radial; A: posterior interosseus