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The reproductive system ensures the survival of the species. Other systems in the body, such as the endocrine and urinary systems, work continuously to maintain homeostasis for the survival of the individual. An individual may live a long, healthy, and happy life without producing offspring, but if the species is to continue, at least some individuals must produce offspring.
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Testis
The testes are ovoid organs that produce sperm (spermatogenesis).
Tunica Albuginea is a thick connective tissue capsule. Lobules are pyramid-shaped lobules that are separated by connective tissue septae that extend inward from the capsule.
Each seminiferous tubule contains 1 to 4 highly coiled seminiferous tubules lined by sperm-producing germinal epithelium.
Sertoli Cells are large, columnar cells that extend throughout the germinal epithelium.
Reference: Testis | Male reproductive system. (n.d.). Histology Guide – virtual microscopy laboratory. https://histologyguide.com//slideview/MHS-267-testis-and-epididymis/19-slide-1.html