Wrist extensors

Question 1

Name the wrist extensors

Answer 1

Extensor Carpi Radialis Longus & Brevis, Extensor Carpi Ulnaris, Extensor Digitorum, Extensor Indicis, Extensor Pollicis Longus.

Question 2

Extensor Carpi Radialis Longus origin

Answer 2

Lower 1/3rd lateral supracondylar ridge of humerous and adjacent intermuscular septum.

Question 3

Extensor Carpi Radialis Longus insertion

Answer 3

post. surface base of 2nd metacarpal

Question 4

Extensor Carpi Radialis Longus nerve supply

Answer 4

radial C6, 7

Question 5

Extensor Carpi Radialis Longus action

Answer 5

wrist extension & radial deviation

Question 6

Extensor Carpi Radialis Longus function

Answer 6

handstands

Question 7

Extensor Carpi Radialis Brevis origin

Answer 7

lat. epicondyle of humerus via common extensor tendon

Question 8

Extensor Carpi Radialis Brevis insertion

Answer 8

post. surface base of 3rd metacarpal

Question 9

Extensor Carpi Radialis Brevis nerve supply

Answer 9

post. interosseus branch of radial nerve C6, 7

Question 10

Extensor Carpi Radialis Brevis action

Answer 10

wrist extension & radial deviation

Question 11

Extensor Carpi Radialis Brevis function

Answer 11

handstands

Question 12

Extensor Carpi Ulnaris origin

Answer 12

lateral epicondyle of humerus via common extensor tendon via aponeurosis to post. border or ulna

Question 13

Extensor Carpi Ulnaris insertion

Answer 13

med. side base of 5th metacarpal

Question 14

Extensor Carpi Ulnaris nerve supply

Answer 14

ulnar C7, 8

Question 15

Extensor Carpi Ulnaris action

Answer 15

wrist extension and ulnar deviation

Question 16

Extensor Carpi Ulnaris function

Answer 16

handstands

Question 17

Extensor Digitorum origin

Answer 17

lat. epicondyle of humerus via common extensor tendon

Question 18

Extensor Digitorum insertion

Answer 18

dorsal digital expansion to base of post. surface of distal & middle phalanges of fingers

Question 19

Extensor Digitorum nerve supply

Answer 19

post. interosseus branch of radial nerve C7, 8

Question 20

Extensor Digitorum action

Answer 20

wrist and phalange extension

Question 21

Extensor Digitorum function

Answer 21

handstands

Question 22

Extensor Indicis origin

Answer 22

lower part of post. surface of ulna & interosseus membrane adjacent

Question 23

Extensor Indicis insertion

Answer 23

index finger digital expansion

Question 24

Extensor Indicis nerve supply

Answer 24

posterior interosseous branch of radial nerve C7, C8

Question 25

Extensor Indicis action

Answer 25

wrist & index finger extensors

Question 26

Extensor Indicis function

Answer 26

handstands

Question 27

Extensor Pollicis Longus origin

Answer 27

middle 1/3 posterior surface of ulna and adjacent interosseus membrane

Question 28

Extensor Pollicis Longus insertion

Answer 28

dorsal surface base of distal phalanx of thumb

Question 29

Extensor Pollicis Longus nerve supply

Answer 29

posterior interosseous branch of radial nerve C7, 8

Question 30

Extensor Pollicis Longus action

Answer 30

wrist and thumb extensor

Question 31

Extensor Pollicis Longus function

Answer 31

handstands