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Questions and Answers
What type of gland is derived from surface epithelium and forms the functional unit with specialized secretory cells?
What type of gland is derived from surface epithelium and forms the functional unit with specialized secretory cells?
- Discrete Organ gland
- Myo-epithelial gland
- Endocrine gland
- Exocrine gland (correct)
Which type of gland is surrounded by star-shaped contractile cells that help in the expulsion of secretions?
Which type of gland is surrounded by star-shaped contractile cells that help in the expulsion of secretions?
- Exocrine gland (correct)
- Endocrine gland
- Discrete Organ gland
- Unicellular gland
Where can unicellular glands, such as goblet cells, be found?
Where can unicellular glands, such as goblet cells, be found?
- Lacrimal gland
- Myo-epithelial glands
- Parotid gland
- Intestinal epithelium (correct)
What modulates the rate of secretion in glands?
What modulates the rate of secretion in glands?
Which category of glands is ducted and releases its products through a duct?
Which category of glands is ducted and releases its products through a duct?
Flashcards
Exocrine gland type
Exocrine gland type
A gland that's derived from surface epithelium, and has specialized secretory cells which release products to external surfaces or lumens.
Secretion regulation
Secretion regulation
Secretion rates in glands are controlled by both the nervous and hormonal systems.
Goblet cell location
Goblet cell location
Unicellular glands like goblet cells are found within the intestinal epithelium.
Unicellular glands
Unicellular glands
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Exocrine gland structure
Exocrine gland structure
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Study Notes
- Glandular Epithelium: type of epithelium specialized in secretion production; all glands are made up of this epithelium
- Secretion: exocytosis, release of products from cells, stored in membrane-bound secretory granules
- Glandular Epithelium: an organ of secretion, derived from surface epithelium, composed of specialized secretory cells, secretes fluids containing enzymes, mucus, hormones, etc.
- General Features of Glands: can be present as discrete organs or in layers of viscera, epithelial origin, functional unit consists of specialized secretory cells, secretion rate modulated by nervous and hormonal influence
- Gland Structure: some exocrine glands have myo-epithelial cells, star-shaped cells between secretory cells and basement membrane, help in expulsion of secretions, share features of both epithelium and muscle cells.
- Gland Categories:
- Exocrine vs Endocrine: presence or absence of ducts, exocrine = ducted, endocrine = ductless
- Unicellular vs Multicellular: unicellular glands are interspersed among other epithelial cells (example: goblet cells), multicellular glands are larger structures (example: lacrimal gland, parotid gland)
- Mode of secretion: unicellular glands secrete continuously, multicellular glands secrete in response to stimuli
- Secretion products: vary from one gland to another.
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