Question

A researcher working on glandular epithelial tissue observed that when sebaceous glands of mammals produced its secretion, the atypical part of the secretary cell comes out along with the secretion.<br />(i) To which group of glandular epithelium would you classify it?<br />(ii) This secretion is like baby's first vaccine containing antibodies. What are these antibodies made of?<br />(A) (i) - Apocrine gland; (ii) - Proteins<br />(B) (i) - Merocrine gland; (ii) - Lipids<br />(C) (i) - Apocrine gland; (ii) - Lipids<br />(D) (i) - Merocrine gland; (ii) - Proteins ​

Answer 1

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Answer 2

Explanation:

Tissues are formed by cells and can be differentiated into four different types: connective tissue, muscle tissue, nerve tissue, and epithelium (epithelial tissue). Epithelium is a component of almost every organ in the body. The subtypes and functions of epithelium will be discussed in this article. Connective, muscle, and nerve tissue are addressed in the respective articles. Epithelium covers all inner and outer surfaces of the body (except joint cavities), namely the skin (epidermis) and all mucous membranes. Based on its predominant function, epithelium can be differentiated into protective surface epithelium and secretory glandular epithelium (exocrine glands). Surface epithelium is named and classified according to various criteria (layers, cell shape, surface characteristics). Glandular tissue can be classified according to its location, shape, secretory mechanism, and the type of secretion associated with it (serous or mucinous). The basement membrane anchors the epithelium to connective tissue and creates a diffusion barrier. The basement membrane is composed of a band-like layer of fibers and large proteins and is tightly bound to the cytoskeleton of cells.

For more information about cellular adaptive responses including apoptosis, necrosis, see the article on cellular changes and adaptive responses.

For images on the histology of both normal and abnormal tissues see the articles virtual histology slide box and virtual histopathology slide box.