Which cells are responsible for nourishing developing sperm cells?

Sertoli cells, also known as sustentacular cells, play a vital role in the nourishment and support of developing sperm cells during spermatogenesis. These specialized somatic cells are located within the seminiferous tubules of the testes and serve several key functions.

Sertoli cells provide a supportive environment for the germ cells as they develop into mature sperm. They are responsible for supplying essential nutrients and growth factors that promote the survival and maturation of spermatozoa. Additionally, Sertoli cells help form the blood-testis barrier, which protects developing germ cells from immune reactions and facilitates a stable environment for spermatogenesis.

Furthermore, Sertoli cells secrete various substances that are crucial for the maturation of sperm, including androgen-binding protein, which helps concentrate testosterone around the germ cells, thereby enhancing their ability to differentiate into sperm.

In summary, Sertoli cells are essential for nurturing and supporting the development of sperm cells, making them the correct answer to the question.