ANATOMY

Detailed explanation-1: -Secondary male characteristics are influenced by hormones known as “androgens.” The “beta” cells of the pancreas are responsible for the production of glucagon. The parathyroid hormone acts in a manner that is antagonistic to the activity of “calcitonin.” The “adrenal gland” lies in the fold of the mesentaries.

Detailed explanation-2: -Testosterone, the hormone responsible for the secondary sexual characteristics that develop in the male during adolescence, stimulates spermatogenesis. These secondary sex characteristics include a deepening of the voice, the growth of facial, axillary, and pubic hair, and the beginnings of the sex drive.

Detailed explanation-3: -The increased secretion of testosterone from the testes during puberty causes the male secondary sexual characteristics to be manifested. Testosterone directly increases size and mass of muscles, vocal cords, and bones, deepening the voice, and changing the shape of the face and skeleton.

Detailed explanation-4: -Estradiol is responsible for the development of secondary sexual characteristics, that is, growth and development of the breasts and reproductive organs, fat redistribution (hips, breasts), and bone maturation.

Detailed explanation-5: -Androgens are crucial for male sexual and reproductive function. They are also responsible for the development of secondary sexual characteristics in men, including facial and body hair growth and voice change. Androgens also affect bone and muscle development and metabolism.