Describe the structure of the kidney in a frog.

(N/A) $\rightarrow$ The kidneys are compact,dark red,and bean-shaped structures situated slightly posteriorly in the body cavity on both sides of the vertebral column.
$\rightarrow$ Each kidney is composed of several structural and functional units called uriniferous tubules or nephrons.
$\rightarrow$ In male frogs,two ureters emerge from the kidneys.
$\rightarrow$ These ureters act as urinogenital ducts,which open into the cloaca.