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Kym C. Calderon posted an update in the group
Microscopic Photos of Reproductive System Tissue Slides 4 years, 3 months ago The testes are where sperm are made. Each testicle is made up of lobules, and each lobule has between one and four seminiferous tubules. The seminiferous tubules have a hollow center and are tightly wound, which makes them longer. Inside the seminiferous tubules are germ cells, called spermatocytes, that are at different stages of development, as well as cells that help them grow, called Sertoli cells or sustentacular cells. Germ cells are close to Sertoli cells, which is like pushing marbles (germ cells) into playdough (Sertoli cells). Sertoli cells make molecules that help make sperm and control the survival of germ cells.-
Transverse section through the seminiferous tubules of the testis. -
The spermatogonia, which are the youngest spermatocytes, are closest to the edge of the tubule, and the spermatozoa, or sperm with tails, which are the most mature spermatocytes, are closest to the middle. Spermatogonia are the biggest of the germ cells, and their nuclei are round and made up of small grains.
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Seminiferous tubules merge to form rete testis, a network of straight tubules that progress to the epididymis, and then to subsequent ducts, ending with the urethra.
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