qS elements of mammalian anatomy 



(49) Flexor brevis pollicis ; capitate (os magum) and scapo- 

 lunar bones to the first phalanx of thumb; flexor of thumb. 



(50) Adductor pollicis; ventral surface of capitate to base 

 of first phalanx of thumb. 



(5 1) Interossei ; small stout muscles between the metacarpals; 

 ventral of lateral surfaces of metacarpals to lateral surfaces of 

 first phalanges of the four ulnar digits. The second interosseus 

 is frequently called the flexor brevis digiti secundi (indicis). 

 Sometimes a second portion of the second interosseus is called 

 also the abductor digiti secundi. 



(52) Adductor digiti secundi; ventral surface of capitate 

 bone to base of first phalanx of second digit. 



(53) Abductor digiti quinti ; pisiform bone to first phalanx of 

 fifth digit. 



(54) Flexor brevis digiti quinti ; ventral surface of fifth meta- 

 carpal to first phalanx of fifth digit. It is an interosseus of 

 the fifth. 



(55) Opponens (adductor) digiti quinti; ventral surface of 

 capitate bone to radial surface of fifth metacarpal and base of 

 first phalanx. 



MUSCLES OF THE POSTERIOR LIMB 



If time permits it is advisable to dissect at least part of the 

 muscles of the hind limb and to compare where possible with 

 the muscles of the forelimb. It is well to note that the posterior 

 limb is much more closely fastened to the body than the forelimb 

 which makes it extremely difficult if not impossible to compare 

 the muscles of the shoulder and thigh. The student will, how- 

 ever, be interested in comparing the forearm with the shank. 



LATERAL SURFACE OF HIP AND THIGH 



Note the tough fascia lata covering the muscles of the thigh; 

 carefully dissect it away so as not to injure any of the underlying 

 muscles. 



