Posterior compartment of forearm Flashcards Preview

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Flashcards in Posterior compartment of forearm Deck (27):
1

superficial layer of posterior forearm muscles

and positions/what looks like

brachioradiais-most lateral

extensor carpir radialis longus-second most lateral

extesor carpi radialis brevis-starts more distally down arm

extensor digitorum-big guy

extensor digiti minimi-most medial small branch of extensor digitorum

extensor carpi ulnaris-most medial

2

brachioradiais attachements

distil surface of distal humorous
and lateral intermusclar septum of arm

styloid process of radius

3

brachioradiais innervation

radial nerve c5-6

4

brachioradiais actions

weak flexor of forearm at elbow

most effective where forearm is mid pronated

DUMBBELL CURL

5

extensor carpir radialis longus attachemnts

lateral supracondylar ridge of distal humooous and from lateral inter muscular septum of forearm

base of 2nd metacarpal

6

extensor carpir radialis longus innervation

radial nerve c6-7

7

extensor carpir radialis longus actions

extend and abduct hand at wrist

weakly flex forearm at elbow

8

proximal attachment of extensor digitum, extensor digit minim, and extensor carpi ulnaris

lateral epicondyle of humorous via common extensor tendon

9

extensor carpi radoialis brevis attachments

lateral epichondyle

base of 3rd metacarpal

10

deep muscles of posterior forearm 5

abductor pollicis longus-most lateral, very thick

extensr pollicis brevis-second most lateral

exteonsor pollicis lognus-longer than braves

extensofor indicis-right under longus

supinator-under/between carpiradialis longs and brachioradialis (so lateral)

11

abductor pollicis longus attachements

dorsal surface of radius, ulna, and interosseous membrane

inserts into base of 1st metacarpal

12

abductor pollicis longus innervation

radial nerve c7-8

13

abductor pollicis longus actions

abudct hand at radiocarpal joint of wrist

abduct thumb at CMC joint of thumb

14

extensr pollicis brevis attachments

interooseous membrane and posterior surface of radius

inserts into base of proximal phanlax of thumb

15

extensr pollicis brevis innervations

radial nerve c7-8

16

extensr pollicis brevis actions

abudct hand at radiocarphal joint

extend thumb at cmc and MCP jonts

17

exteonsor pollicis lognus attchments

posterior surface of ulna and interosseous membrane

base of the distal phenix of the thumb

18

exteonsor pollicis lognus innervations

radial nerve c7-8

19

exteonsor pollicis lognus actions

extend and abduct hand at wrist

adduct thumb at CMC joint

extend thumb at MCP and IP joints

20

extensofor indicis attchments

posterior surface of ulna and interosseous membrane

inserts into posterior digital opinion of 2nd digit

21

extensofor indicis innervations

radial nerve c7-8

22

extensofor indicis actions

extend hand at wrist

extend 2nd digit at MCP and PIP and DIP joints

23

supinator attachemnts

olecranon, lateral epicondyle of hombres, radial collateral ligaments, and annular ligament of radius

inserts onto radius between radial tuberous y and insertion of pronator trees

24

supinator innervation

radial nerve c6-7

25

supinator actions

suiantes forarm at radioulnar joint

26

neurovasculature of anterior forearm

posterior interosseoou s nerve-termination of deep radial nerve as emerges from supinator

posterior interosseous artery-runs along with posterior interroseous nerve

radial artery-appears coming out of extensor retinaculum

27

snuff box

what bounds it-ant/post/bottom

whats inside it

anteriorly-tendons of abductor policies longus and extensor policies brevis

posteriorly by tendon of extensor policies longus

floor=scaphoid bone

radial artery