. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. 660 THE ARTERIES. 2. The inferior thyroid, the origia of wliich, and some branches, we find in the ascending branch {ascending cervical) of the inferior cervical artery in the Horse. 3. The internal mammary artery divides into two branches at the xiphoid cartilage of tlie sternum. 4. The superior intercostal artery, the analogue of which we see in Solipeds, in the subcostal branch of the dorsal. 5. The supra-scapular artery, present in all animals and dis- posed in the same manner. 6. The transverse cervical (tr
. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. 660 THE ARTERIES. 2. The inferior thyroid, the origia of wliich, and some branches, we find in the ascending branch {ascending cervical) of the inferior cervical artery in the Horse. 3. The internal mammary artery divides into two branches at the xiphoid cartilage of tlie sternum. 4. The superior intercostal artery, the analogue of which we see in Solipeds, in the subcostal branch of the dorsal. 5. The supra-scapular artery, present in all animals and dis- posed in the same manner. 6. The transverse cervical (transversa colli), represented by the extra-thoracic branches of the dorsal artery. The Axillary Artery, or extra-thoracic portion of the subclavian trunk, extends to the external border of tlie pectoral muscle, where it is continued by tlie humeral artery. The axillary gives off: th^ thoracica acromialis, resembling the de- scending branch of the interior cervical artery of large quad- rupeds; the external mammary ; subscapular; -dnd posterior \d anterior circumflex, branches of the preceding in Solipeds. Humeral (Brachial) Artery.—Tliis artery extends from the external border of the pectoral muscle to the bend of the elbow: here it divides into two terminal branches—the ulnar and radial. In its course it gives off several muscular braichcs, and an external and internal collateral of the elbow (coUateralis ulnaris superior and inferior). In the lower third of the arm, the brachial artery is comprifod between the brachialis anticus and inner border of the biceps ; so that, during flexion, and especially active and forced flexion, of the forearm on the arm, in vigorous subjec's, the circulation is arrested in the vessels of the hand. The radial artery oi Man is represented in the Horse by the posterior radial artery. It is directed downward and a little inward, supposing the hand to be in a state of [)ronation; it crosses the carpus in front of the trapezium and scaphoides,
Size: 902px × 2772px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcha, bookcentury1900, bookdecade1900, booksubjecthorses
