78 



THE HUMAN BODY. 



bone fits (see Fig. 16). Between the pubic and ischial bones , 

 is the largest foramen in the whole skeleton, known as the 

 doorlike or thyroid foramen. The pubic bone lies above 



FIG. 32. The skeleton of the trunk and the limb arches seen from the front. C, 

 clavicle; S, scapula; Oc, innominate bone attached to the side of the sacrum dor- 

 sally and meeting its fellow at t.hepufoic symphysis in the ventral median line. 



and the ischial below it. The ilium forms the upper expanded 

 portion of the os innominatum to which the line drawn from 

 Oc in Fig. 32 points. 



The Hind Limb. In this there are thirty bones, as in the 

 fore limb, but not quite similarly arranged; there being one 

 less at the ankle than in the wrist, and one at the knee not 

 present at the elbow-joint. The thigh-bone or femur (a, 

 Fig. 34) is the largest bone in the body and extends from the 

 hip to the knee-joint. It presents above a large rounded 

 head which fits into the acetabulum and, below, it is also 



