Chp 10-Forearm Extensors

Question 1

Forearm Extensors mm. (6)

Answer 1

1. Ext. carpi radialis longus
2. Ext. carpi radialis brevis
3. ABductor pollicis longus
4. Ext. carpi ulnaris
5. Ext. digitorum
6. Ext pollicis brevis & longus

Question 2

Ext. carpi radialis longus - O =

Answer 2

O: lateral supracondylar ridge

Question 3

Ext. carpi radialis longus - I =

Answer 3

I: metacarpal #2

Question 4

Ext. carpi radialis longus - A =

Answer 4

A: extension w/ radial deviation

Question 5

Ext. carpi radialis brevis - O =

Answer 5

O: lateral epicondyle

Question 6

Ext. carpi radialis brevis - I =

Answer 6

I: metacarpal #2 & 3

Question 7

Ext. carpi radialis brevis - A =

Answer 7

A: extension w/ radial deviation

Question 8

ABductor pollicis longus - O =

Answer 8

O: posterior ulna, radius, interosseus membrane

Question 9

ABductor pollicis longus - I =

Answer 9

I: metacarpal #1 & trapezium

Question 10

ABductor pollicis longus - A =

Answer 10

A: ABduct thumb away from palm

Question 11

Ext. carpi ulnaris - O =

Answer 11

O: lateral epicondyle

Question 12

Ext. carpi ulnaris - I =

Answer 12

I: metacarpal #5

Question 13

Ext. carpi ulnaris - A =

Answer 13

A: extend wrist

Question 14

Ext. digitorum - O =

Answer 14

O: lateral epicondyle

Question 15

Ext. digitorum - I =

Answer 15

I: digits (extension hood)

Question 16

Ext. digitorum - A =

Answer 16

A: extend fingers

Question 17

Ext. pollicis brevis & longus - O =

Answer 17

O: posterior radius, ulna & interosseus membrane

Question 18

Ext. pollicis brevis & longus - I =

Answer 18

I: proximal thumb phalanx (brevis), distal thumb phalanx (longus)

Question 19

Ext. pollicis brevis & longus - A =

Answer 19

A: extends thumb