344 



CHORD AT A, 



function as vasa deferentia and have a small prostate gland 

 attached to them."^ To the front end of the testes are 

 attached a number of branching y^/-^^^/^i- (or corpora adi- 

 posa). In the female the ovaries are large dark organs, 

 suspended by dorsal mesenteries near the kidneys. The 

 oviducts are long, coiled, paired tubes running throughout 

 the length of the abdominal cavity. They open behind into 



Fig. 242. — Diagram of Arterial System of a Frog. 

 (Ventral view.) 



Lingual. 



Carotid Gland. 

 Carotid. 



Dorsal Aorta, 



Kidney. 



Iliacs. 



the cloaca, in front into the abdominal cavity by separate 

 funnel-shaped apertures just in front of the lungs. Their 

 lower portions are wide and saccular and are sometimes 

 called the uterine portions of the oviduct. The walls of the 

 upper portion are glandular and secrete albumen. The eggs, 

 when ripe, are discharged into the abdominal cavity and pass 



* In Rana escnlenta the prostate gland is absent, but the ureters are swollen for 

 a part of their course. 



