Answer :
Final answer:
Testosterone is the primary male sex hormone essential for the development of secondary sexual characteristics and sperm production.
Explanation:
Testosterone is the main male sex hormone, primarily secreted by the testes. It plays a crucial role in the development of secondary sexual characteristics in males, such as facial hair growth and increased muscle mass.
Secretion of testosterone is regulated by the hypothalamus and the anterior pituitary gland. Additionally, testosterone promotes sperm production in males.
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