In which animal are the testes abdominal during embryonic stages but migrate to the scrotum just before birth,where they remain throughout life?

Read the following paragraph with two blanks: Each testis has about $A$ compartments called as testicular lobules. Each lobule contains $B$ highly coiled seminiferous tubules in which the sperms are produced. The correct option for the two blanks is

$A$

$B$

How much lower is the temperature of the testes maintained by the scrotum compared to the body temperature?

What is the process of circumcision?

During early and middle fetal life,the testes are located in the:

The shared terminal duct of the reproductive and urinary system in the human male is