344. CHORDATA. 
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 /at-bodies (or corpora adt- 
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. 
aN Carotid Gland. 
Carotid. 
Cutaneous. 
Cutaneous. 
Brachial. Pulmonary. 
Systemic Arch. 
Arteriosus. 
Cceliaco- 
mesenteric. 
Dorsal Aorta. D— Ceeliac. 
Kidney. 
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 esculenta the prostate gland is absent, but the ureters are swollen for 
a part of their course. 
