Final answer:
In the male reproductive system, pathways are controlled by hormones released from the hypothalamus and anterior pituitary. The hormones stimulate cells in the testes to produce sperm, and testosterone is responsible for male secondary sexual characteristics. This process is regulated by a negative feedback system.
Step-by-step explanation:
In the male reproductive system, the pathways are not cyclical like in the female reproductive system. Instead, they are controlled by hormones released from the hypothalamus and anterior pituitary, as well as hormones from reproductive tissues and organs.
FSH and LH stimulate Sertoli cells and interstitial cells of Leydig in the testes to facilitate sperm production. The Leydig cells produce testosterone, which is responsible for the secondary sexual characteristics of males.
These hormones and cells work together in a negative feedback system, where rising levels of testosterone inhibit the release of certain hormones to regulate sperm production.