318 



Muscles of the Arm. 



M. Hfxor caii>i ladialis 

 M. abductor pollicis longus. 



Liganientuin carpi transversuni 

 M. abductor pollicis lirevis 



M. flexor pollicis brevis -- 



M. flexor carpi 

 ulnaris 



I Is pisiforine 



M.~abductor 

 (liL'iti V 



M. flexor 



digiti Y 



brevis 



jNI. addu('tor j)ollicis 



Mm. lunibricales .=-r^~^ 



M. flexor pollicis /L 



longus 



M. oppoiieus 

 digiti V 



M. flexor 

 digitorum 

 sublimis 



363. 



Muscles of the 

 right palm. 



M. abductor pollicis 



brevis (0. T. abductur polli- 

 cis). Form: flat. Position: 



su])ei-ficial upon the ball of the 



thumb. ()ri<j;in: li<;'. carpi 



transversuni and tuberculum 



OSS. navicularis. Insertion: 



base of the first phalanx of 



the thumb and tendun of the 



m. exten.^or iinllicis longus. 



Action: it opposes the 



thumb; it fle.xes the first and 

 extends the second ])halanx. 



ii;)nervatii II n. nedianws. 

 JL. abdiictoi digiti 

 qiilnti ro. T. abductor uuinimi digiti) (see also Fig 

 3l>lj. Form: flat, ollong. Position: superfleia 

 upon the ball n}' tlie ht^le tmger. Origin: lig. carpi 

 transversuni and os pisi'/orrae. Insertion: base of 



the first plialanx of tlie 5 'i' finger a nd to its extensor tendi ms. A c t i o n : it abd\icts the 5*^ flnger and 

 extends its 2"'^ and 3"'^ ph.vVmx. In nerva t. : ramus profundus of the ramus volarismauusn.nlnaris. 

 M. flexor dijriti quinti. brevis (O.T. flexor brevis minimi digiti) (frequently absent). Form: 

 flat, oblong. I'osi tiou: supeili'ial, on the radial side ofthe preceding muscle. Grig.: lig. cari>i trans- 

 versuni and hamulus oss. hama^i. Insertion: base ofthe first phalanx of the 5<^ finger. Action: it 

 flexes the first phalanx of tlielitti",fingeran<l abducts it. I nnervat.: like that ofthe preceding muscle. 



Ligameutuiii 



vaginale 



digiti 



Ligaiuentii 

 annulare 

 / digiti 



Ligauientuiu 

 cruciatum 



digiti 



^.jut-'*^ 



