......... performs a dual function as a primary sex organ as well as an endocrine gland.

How much lower is the temperature of the scrotum compared to the abdominal cavity?

The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for

$A$: Occasionally,mammary glands are functional in males,and the condition is called gynaecomastia.
$R$: Decreased testosterone in later life may also lead to gynaecomastia. It is usually due to the perturbation of the estrogen-to-androgen ratio.

$A$: The secretions of male accessory glands constitute the seminal plasma,which is rich in fructose,calcium,and certain enzymes. $R$: Fructose serves as a source of energy for the sperms.

Trace the correct path of movement of the sperms up to the urethra.