110 



TTIU CAT. 



[chap. IV. 



wards, and so fits into the median articular surface at the lower end 

 of the front surface of the femur. 



./. 



it . 



V. 



A 



jP 



em 



Fig. 00.— The Right Tiuia and Fibula, seen 



IN FKONT. 



A. Tibia. 



B. Fibula. 



Fig. 70.— The Richt Tibia and Fibula, si:en 



BEIIINI^. 



A. The tibia. B. Tlie libiila. 



It is attached ahove hy its broad upper margin to the tendon ot 

 the front muscle of the thigh. Below, a ligament goes from its 

 pointed lower end to the upper part of the shin-bone. 



§ 15. The TIBIA, or shin-bone, is the absolutely longest bone in 

 the oat's skeleton. It transmits the weight of the hinder part of 

 the body from the thigh to the foot. 



Its upper end is very wide, and presents two articular surfaces 

 (co)i(h/Ics) — which are each convex from before backwards, and 

 slightly concave from side to side {re and ic), and which receive the 

 two condyles of tlic femur. IJetween these articular surfaces there 

 is a depression, or pit, giving insertion to one end of one of the 

 crucial liyamciii'^ which connect the femur mth the tibia. 



