The secretory part of sweat glands is composed of cuboidal epithelium. Let's understand this in detail.

Sweat Glands
Sweat glands are exocrine glands that produce sweat. They are present all over the body, except for the lips, ear canal, and nail beds. The human body has two types of sweat glands:
1. Eccrine sweat glands
2. Apocrine sweat glands

Secretory Part of Sweat Glands
The secretory part of sweat glands is responsible for producing sweat. It is composed of two types of cells- secretory cells and myoepithelial cells.

Secretory Cells
The secretory cells are responsible for producing sweat. They are cuboidal epithelial cells that are organized into a spherical or tubular structure. The secretory cells are arranged in a single layer and are tightly packed together. They contain numerous mitochondria, which provide energy for the production of sweat.

Myoepithelial Cells
The myoepithelial cells are contractile cells that surround the secretory cells. They are responsible for squeezing the secretory cells and pushing the sweat out of the gland. The myoepithelial cells are also cuboidal epithelial cells, but they are larger and have more cytoplasm than the secretory cells.

Epithelial Tissue
Epithelial tissue is a type of tissue that lines the surfaces of the body. It is composed of tightly packed cells that are arranged in a single layer or multiple layers. The cells are held together by tight junctions, which prevent substances from passing between the cells. Epithelial tissue is classified based on the shape of the cells and the number of layers.

Types of Epithelial Tissue
1. Squamous epithelium
2. Cuboidal epithelium
3. Columnar epithelium
4. Pseudostratified epithelium

Cuboidal Epithelium
Cuboidal epithelium is composed of cube-shaped cells. It is found in the secretory part of many glands, including sweat glands. Cuboidal epithelium is responsible for producing and secreting substances. It is also involved in the absorption of substances.

Conclusion
In conclusion, the secretory part of sweat glands is composed of cuboidal epithelium. The cuboidal epithelial cells are responsible for producing sweat, while the myoepithelial cells are responsible for pushing the sweat out of the gland.

Sudoriparous gland or secretory part of sweat gland
has a cuboidal epithellium . option A is correct