718 



THE BLOOD-VASCULAR SYSTEM OF THE OX 



In the cow it is usually termed the mammary and is very large, especially during 

 lactation. Each divides at the base of the mammary gland into two branches 

 which are distributed to the anterior and posterior parts ("quarters") of the gland. 

 A small branch accompanies the subcutaneous abdominal vein to the xiphoid region. 

 2. The deep femoral artery gives off an obturator branch which passes up 

 through the obturator foramen to supply the obturator internus and compensates 

 otherwise for the absence of the obturator artery. 



■9' 



Fig. GOl. — Arteries of Distal Part of Right Hind 

 Limb of Ox; Dorsal View. 

 a, Anterior tibial arterj^; h, proximal perforating 

 metatarsal artery; c, dorsal metatarsal artery; d, dorsal 

 common digital artery; e, e', dorsal proper digital ar- 

 teries. 



Fig. 602. — Arteries of Distal Part of Right Hind 

 Limb of Ox; Plantar View. 

 e. Saphenous artery; /, /', internal and external 

 plantar arteries; p, g' , medial and lateral superficial 

 plantar metatarsal arteries; h, deep plantar metatarsal 

 artery; i, j, medial and lateral plantar digital arteries, 

 k, plantar common digital artery; I, V, medial and lat- 

 eral plantar digital arteries, 



3. The anterior femoral artery is large. It often gives off the external cir- 

 ctmifiex artery of the thigh, which perforates the proximal end of the quadriceps, 

 gives branches to that muscle, the iliacus, glutei, and tensor fascise latse, 



4. The saphenous artery is large. It descends in front of the homonymous 

 vein over the medial surface of the leg, and divides near the hock into lateral 

 and medial tarsal arteries. The lateral tarsal artery is small and is distributed 

 on the outer part of the hock. The medial tarsal artery is the direct continuation 



