486 



COLLEGE ZOOLOGY 



oc 



CU+ 



carotid to the brain, and the ophthalmic artery to the eye. Where 

 the common carotid branches is a swelling called the carotid 

 gland (Fig. 413 b, A, 7); this body impedes the blood flow 



in the internal carotid 



artery. 



(2) Thepulmocutaneous 

 artery (Fig. 413 b, A, 70 ; 

 Fig. 414, p.cu} branches, 

 forming the pulmonary 

 artery, which passes to 

 the lungs, and the cutane- 

 ous artery. The latter 

 gives off the auricularis, 

 which is distributed to 

 the lower jaw and neigh- 

 boring parts, the dorsalis, 

 which supplies the skin 

 of the back, and the 

 lateralis, which supplies 

 the skin of the sides. 

 Most of these branches 

 carry blood to the re- 

 spiratory organs lungs, 

 skin, and mouth. 



(3) The third branches 

 or systemic arches (Fig. 



FIG. 414. Diagram of the arterial system " 



of the frog, ventral view, ao", aortic arch; 4^3 b, A, 95 Fig. 4*4j^ ) 



au' right auricle; au", left auricle; ftr brachial ft p assmg outward 

 artery ; c.c, carotid ; c.gl, carotid gland ; 



c.il, common iliac ; cce, cocliaco-mesenteric ; and around the aliment- 



c',cceliac; cu, cutaneous; da* dorsal aorta; canal unite to form 



Jm, femoral ; g, gastric ; h, hcemorrhoidal ; > 



hp, hepatic; hy, epigastrico-vesical; k, kidney; the dorsal aorta (d.ao). 



I, lingual; Ig", left lung; m, anterior mesen- chnwn in FiVnre AT/1 



teric; m.i, posterior mesenteric; oc, occipital; AS ShOWn 



pc', pancreatic; p.cu, pulmocutaneous ; pvl, each systemic arch gives 



pulmonary; re renal ; sc sciatic; 5*. splenic; ff occipito- vertebral 

 tr.a, truncus artenosus; Is, testis; v, vertebral. 



(From Holmes, after Howes.) artery, which divides, one 



c.il 



