State the location of the testis. Mention the functions and name of the hormones produced by it.

(N/A) Location: $A$ pair of testis is situated outside the abdominal cavity within a pouch called the scrotum.
Functions and Hormones: The testis functions as both a primary sex organ and an endocrine gland.
$1$. Hormone Production: The Leydig cells (interstitial cells) located in the intertubular spaces produce a group of hormones called androgens,primarily $Testosterone$.
$2$. Functions of Androgens:
- They regulate the development,maturation,and functions of male accessory sex organs such as the epididymis,vas deferens,seminal vesicles,prostate gland,and urethra.
- They stimulate the development of secondary sexual characters like muscular growth,facial and axillary hair,aggressiveness,and a low-pitched voice.
- They play a major stimulatory role in the process of $Spermatogenesis$.
- They influence male sexual behavior (libido) by acting on the central nervous system.
- They produce anabolic effects on protein and carbohydrate metabolism.