456 



COLLEGE ZOOLOGY 



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) The pulmocutaneou: 

 artery (Fig. 413 b, A, ic 

 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; 413 b, A, 9; Fig. 414,00 ) 



««', right auricle; «,» left auricle; 6r brachial fter passing outward 



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



c.il, common iliac ; cos, cceliaco-mesenteric ; and around the aliment- 



cf, cceliac; cu, cutaneous; d ao dorsal aorta; canal unite tQ form 



fm, femoral; g, gastric; h, hcemorrhoidal ; J 



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



I lingual: Ig" left lung; «, anterior mesen- M gh()wn m pj 



tenc; 711.1, posterior mesenteric; oc, occipital; ° . 



pc', pancreatic; p.cu, pulmocutaneous ; pul, each Systemic arch gives 



pulmonary ; re, renal ; sc, sciatic ; sp, splenic; Qff an occ ipi to - vertebral 



tr.a, truncus arteriosus; ts, testis; v, vertebral. r 



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





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