236 



ANATOMY OF THE DOMESTIC FOWL 



receives blood from the vena supra-palatina and from the lower 

 jaw bone and the external mandibular vein. It also receives blood 

 from the external sublingual vein, and the sublingual gland. It 

 follows the inner rim of the jaw bone. The maxillary vein receives 

 an anastomosing branch from the cutaneous facial vein, at a point 

 near the commissure of the mouth. 



FIG. 73. Photograph of blood-vessels and nerves of the thorax, i, Vena 

 sternalis. 2, Vena thoracico-externa. 3, External thoracic artery. 4, Coracoid 

 bone. 5, Sternum. 6, Shoulder- joint. 7, Humerus. 8, Clavicularis artery. 

 9, Sterno-clavicularis artery. 10, Thoracico-humeralis artery. II, Subclavian 

 artery. 12, Axillary artery. 13, Brachialis profundus artery. 14, Ulnar 

 artery. 15, Radial artery. 16, Internal mammary artery. 17, Superior vein 

 of the crop. 18, Superior artery of the crop. 19, Brachial nerve plexus. 20, 

 Anterior division of brachial nerVfe plexus. 21, Posterior division of brachial 

 nerve plexus. 



The vena ophthalmica lies close to the point where the olfactory 

 nerve passes out of the cranial cavity. The largest branch it re- 

 ceives is the recurrent ophthalmo-temporalis, which accompanies the 

 lateral side of the optic nerve. It collects the blood from the base 

 of the brain, from Harder's gland, from the eye muscles, from the 



