Chap. 14.] Tland y Finger ', &V. 181 



The flexor ofiis metacarpi pollicis, or opponens 

 pollicis, arifes from the os trapezium and ligamentum 

 carpi annulare. It is inferted into the under and an- 

 terior part of the firft bone of the thumb. Its effect 

 is to bring the thumb inwards, fo as to place it in oppo- 

 fition to the fingers. 



The abductor pollicis rnanus commences from the 

 ligamentum carpi anmilare and from the os trapezium, 

 and is inferred into the outer fide of the root of the 

 firft bone of the thumb. Its ufe is to draw the thumb 

 from the fingers. 



The adductor pollicis manus arifes from the me*- 

 tacarpal bone which fuftains the middle finger, and is 

 inferted into the inner part of the root of the firft bone 

 of the thumb. This mufcle pulls the thumb towards 

 the fingers. 



The thumb has, therefore, in all, eight mufcles, 

 four feated in the fore-arm and four in the hand. Of 

 the whole eight, three are flexors, three extenfors, one 

 is an abductor, the other an adductor. 



One mufcle, the indicator, proper to the fore-finger, 

 and feated in the fore-arm, has been already defcribed ; 

 another mufcle proper to this finger is feated in the 

 hand j it is called 



The abdudor indicis manus, and arifes from the 

 inner fide of the firft bone of the thumb and from the 

 os trapezium, and is inferted into the r"irft bone of the 

 fore-finger. It ferves to bring the fore-finger towards 

 the thumb. 



To the little finger belong 



The abductor minimi digiti, which arifes from 

 the os pififorme and the adjacent part of the annu- 

 lar ligament. It is inferted into the fide of the firfl 

 bone of the little finger, which it draws from the 

 reft. 



N 3 The 



