ANATOMY IN A NUTSHELL. 



Ill 



digiti, and the Third palmar interosseous. Thesecond phalanx of the little 

 finger articulates with two hones, the first phalanx proximally and the third 

 phalanx distally. It has three muscles attached, the Extensor communis 

 digitorum. Extensor minimi digiti, and Flexor sublimis digitorum. The third 

 phalanx of the little finger articulates with one hone, the second phalanx prox- 

 imally, and has three muscles attached, the Extensor communis digitorum 

 Extensor minimi digiti. and Flexor profundus digitorum. 



Abductor pollicis. — Description. — (Plate XXXI.)- This is a thin flat 

 muscle placed immediately beneath the integument. It passes outward and 



PLATE XLII 



Showing the Synovial Membranes of the Wrist 



downward and terminates in a flat tendon, sending a slip to join the tendon of 

 the Extensor longus pollicis. 



ORIGIN. — Ridge of trapezium and annular ligament. (Plate XXVII.) 



Insertion.- Radial side at base of first phalanx of thumb. (Plate XXVII.) 



Action.— Abducts the thumb. 



Nerve Supply. Sixth cervical through the median. 



