Question

Sertoli cells are called
A)Secretory cells
B)Respiratory cells
C)Excretory cells
D)Nurse cells

Answer 1

1)Sertoli cells are located in human testes.
2)The heads of spermatozoa which are developing sperms are embedded in sertoli cells.

Complete answer:
In the seminiferous tubules, spermatogenesis takes place. This involves mitosis and meiosis, followed by maturation to form spermatocytes to form haploid gametes (called spermiogenesis).A complex stratified epithelium containing two different populations of cells, spermatogenic cells that grow into spermatozoa, and Sertoli cells with a supportive and nutrient role, lines the seminiferous tubules.
The epithelial supporting cells of the seminiferous tubules are Sertoli cells. They are derived from the growing gonads' epithelial sex cords. These are tall, simple columnar cells that extend from the lumen to the basement membrane. They surround the proliferating and differentiating germ cells that form pockets around these cells, provide nutrients, and phagocytose excess spermatid cytoplasm, which is not required for spermatozoa formation.
Sertoli cells help the progenitors of germ cells and assist in the movement of nutrients from surrounding capillaries. For all of their nourishment, the developing spermatogonia depend on the Sertoli cells. Spermatogonia, spermatocytes, spermatids and mature spermatozoa are effectively separated from the blood by the blood-testis barrier produced by the Sertoli cells.

Let us analyze the options to find out the correct option.

Option A, B and C: Therefore, these are incorrect options.

Option D: Sertoli cells are also referred to as nursing cells because they provide spermatozoa with nutrients.

Hence, the correct answer is option (D)

Note: 1)Sertoli cells help in differentiation of germ cells.
2)FSH regulates the function of sertoli cells.
3)Sertoli cells control the flow of nutrients and growth factors to the haploid germ cells via close junctions between adjacent cells.