Posterior compartment of forearm

Question 1

superficial layer of posterior forearm muscles

and positions/what looks like

Answer 1

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

Question 2

brachioradiais attachements

Answer 2

distil surface of distal humorous
and lateral intermusclar septum of arm

styloid process of radius

Question 3

brachioradiais innervation

Answer 3

radial nerve c5-6

Question 4

brachioradiais actions

Answer 4

weak flexor of forearm at elbow

most effective where forearm is mid pronated

DUMBBELL CURL

Question 5

extensor carpir radialis longus attachemnts

Answer 5

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

base of 2nd metacarpal

Question 6

extensor carpir radialis longus innervation

Answer 6

radial nerve c6-7

Question 7

extensor carpir radialis longus actions

Answer 7

extend and abduct hand at wrist

weakly flex forearm at elbow

Question 8

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

Answer 8

lateral epicondyle of humorous via common extensor tendon

Question 9

extensor carpi radoialis brevis attachments

Answer 9

lateral epichondyle

base of 3rd metacarpal

Question 10

deep muscles of posterior forearm 5

Answer 10

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)

Question 11

abductor pollicis longus attachements

Answer 11

dorsal surface of radius, ulna, and interosseous membrane

inserts into base of 1st metacarpal

Question 12

abductor pollicis longus innervation

Answer 12

radial nerve c7-8

Question 13

abductor pollicis longus actions

Answer 13

abudct hand at radiocarpal joint of wrist

abduct thumb at CMC joint of thumb

Question 14

extensr pollicis brevis attachments

Answer 14

interooseous membrane and posterior surface of radius

inserts into base of proximal phanlax of thumb

Question 15

extensr pollicis brevis innervations

Answer 15

radial nerve c7-8

Question 16

extensr pollicis brevis actions

Answer 16

abudct hand at radiocarphal joint

extend thumb at cmc and MCP jonts

Question 17

exteonsor pollicis lognus attchments

Answer 17

posterior surface of ulna and interosseous membrane

base of the distal phenix of the thumb

Question 18

exteonsor pollicis lognus innervations

Answer 18

radial nerve c7-8

Question 19

exteonsor pollicis lognus actions

Answer 19

extend and abduct hand at wrist

adduct thumb at CMC joint

extend thumb at MCP and IP joints

Question 20

extensofor indicis attchments

Answer 20

posterior surface of ulna and interosseous membrane

inserts into posterior digital opinion of 2nd digit

Question 21

extensofor indicis innervations

Answer 21

radial nerve c7-8

Question 22

extensofor indicis actions

Answer 22

extend hand at wrist

extend 2nd digit at MCP and PIP and DIP joints

Question 23

supinator attachemnts

Answer 23

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

Question 24

supinator innervation

Answer 24

radial nerve c6-7

Question 25

supinator actions

Answer 25

suiantes forarm at radioulnar joint

Question 26

neurovasculature of anterior forearm

Answer 26

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

Question 27

snuff box

what bounds it-ant/post/bottom

whats inside it

Answer 27

anteriorly-tendons of abductor policies longus and extensor policies brevis

posteriorly by tendon of extensor policies longus

floor=scaphoid bone

radial artery