Secretory Cell
At first, lysosomal exocytosis was regarded as a function of specialized secretory cells , namely hematopoietic cells , containing a peculiar type of lysosomes, which acquired the competence of regulated secretory organelles ( secretory lysosomes).
Secretory Cells and Secretory Tissues
Secretory cells and tissues are concerned with the accumulation of metabolism by products which are not used as reserve substances. Most secretory cells are specialized cells derived from elements belonging to other tissues, mainly epidermis or parenchymatous tissues. In such cases, they do not constitute true independent tissues and it is justified to speak of secretory parenchymas or ...
Essential physiological functions in eukaryotic cells , such as release of hormones and digestive enzymes, neurotransmission, and intercellular signaling, are all achieved by cell secretion. In regulated (calcium-dependent) secretion, membrane-bound secretory vesicles dock and transiently fuse with specialized , permanent, plasma membrane structures, called porosomes or fusion pores. Porosomes ...
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Glandular Epithelium
Glandular epithelium, also known as glandular tissue, refers to a type of epithelial tissue involved in the production and release of different secretory products, such as sweat, saliva, breast milk, digestive enzymes, and hormones, among many other substances. Glandular epithelium is arranged into structures known as glands, which can either be a single cell or a group of cells specialized in ...
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