Question

Germinal epithelium is composed of
A)Cuboidal epithelium
B)Columnar epithelium
C)Glandular epithelium
D)None of the above

Answer 1

Hint: In the early developmental stages, the embryo has germinal epithelium as a dense layer of cells that protects the sex organs. There are cuboidal cells present in the ovary and both testicles. It covers the wall of seminiferous tubules within the testicles in males.

Complete answer:
A layer of cells surrounding the ovary is the germinal epithelium in females. The innermost layer of the testicle is the Germinal epithelium in males. The cuboidal epithelium consists of the germinal epithelium. The primary tissue layer developed in animals during embryogenesis is the germ layer. Cuboidal epithelia are epithelial cells with a cube-like shape, which is roughly equal in width to their height. Depending on their position, they can exist in single layers, simple cuboidal epithelium or multiple layers, stratified cuboidal epithelium, and thus act in the body.

The basic cuboidal epithelium comprises a monolayer of cross-sectional epithelial cells. It thus appears square-shaped. With tall, rounded, centrally located nuclei, all the cells of this epithelium are directly attached to the basement membrane. The basic cuboidal epithelium consists of cells that in a single layer are as tall as they are large. The substantial functions of the basic cuboidal epithelium are secretion and absorption. This epithelial form is located in the small collecting ducts of the kidneys, pancreas, and salivary glands.

Hence, the correct answer is option (A)

Note: Two types of cells in males make up the germinal epithelium. Large Sertoli cells (which do not divide) act as support cells that produce sperm. The second cell type is the cells belonging to the spermatogenic cell lineage. These gradually mature into sperm cells (spermatozoon). Typically, the spermatogenic cells in the germinal epithelium can form four to eight layers.