168 SPECIAL ANATOMY. 



M.flex. ulnar. carpi. Ins.: Basis phalang. I. digiti V. Use: 

 to draw the little finger inwards (that is to say, from the fourth 

 finger). 



327. 6. Flexor digiti V. brevis. 



Pos. : on the outer border of the last muscle, separated from it 

 by Vasa and Nn. ulnares. Or. : Os hamatum (the process, unci- 

 form.) and lig. carp. vol. propr. Ins. : Basis phalang. I. digiti 

 V. Use: to flex a little the first phalanx of the fifth finger. 



328. 7. Opponens digiti V. 



Pos. : covered by the last muscles, above the interosseus and 

 the tendon of flex, digit, comm. of the fifth finger. Or. : Os 

 Hamatum (the process). Ins.: capitulum and the whole ulnar 

 side of os metacarpi V. Use : to draw the fifth metacarpal bone 

 outwards and forwards (that is, towards the thumb in making the 

 hand hollow). 



Nerves : (fifth to the seventh) ulnaris r. profund. volaris. 



c. Muscles in the middle of the palm of the Hand. 



329. 8. Palmaris brevis, Cutaneous muscle of hand. 



Pos. : close beneath the skin, in the fat over the muscles of the 

 little finger and Art. and Nerv. ulnaris; transverse, one inch 

 broad and long. Or. : Jlponeurosis palmar, media. Ins. : the 

 skin of the ulnar border, from os pisiforme onwards. Use: 

 wrinkles the skin on the ball of the little finger. 



Nerves : ulnaris r. sublimis volar. 



330. 9. Lumbricales. 



Pos. : beneath Aponeurosis palmaris on the four tendons of 

 the flexor digit, profundus, in the hollow of the hand. Or. : the 

 radial side of the three tendons of flex, profund. Ins. : the 

 radial side of first phalanx of the second to the fifth finger; 

 blending with the tendons of extens. digitor. communis. Use: 

 flexes the first phalanx of the second, third, fourth, and fifth 

 fingers. 



Nerves : medianus, for the fourth ulnaris r. superfic. 



331. 10. Interossei volares s. interni, 3. 



Pos. : in the spaces] between Ossa metacarpi, second to fifth, 

 in the palm, covered before by the flexors, behind by the m. in- 

 teross. dorsales. Or. : sides of os metacarpi (two-thirds of the 

 anterior surface) //., 7F"., V. Ins.: Phalanx I. of second (ulnar 

 side), fourth, and fifth (radial side) fingers, and the tendon of m. 

 extens. digitor. communis. Use, to draw the second, fourth, and 

 fifth fingers towards the middle finger. 



