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Glands Ch 6
Endocrine & Exocrine Glands
Question | Answer |
---|---|
What are the two different types of glands? | Endocrine glands & exocrine glands. |
Endorine glands are... | ductless; secrete hormones into the blood. |
Exocrine glands are... | secrete their products either onto the apical surface of the cell or ducts for transport to the free surface. |
What are the two structural classificaions of glands? | Unicellular or multicellular. |
Unicellular glands are... | best described as goblet cells; which secretes its product directly onto the free surface of many epithelia. |
Multicellular glands are... | a secreting organ found deep to the free surface and attatched to it via a duct. |
What are two structures of the duct? | Simple and compound. |
What are the three shapes of the secretory part? | Tubular, alveolar, and tubuloalveolar. |
What are the two relationships between duct and secretory portion? | Simple and branched. |
What is Holocrine secretion? | The cells accumulate secretory product in their cytosol, die, and are discharged with their contents as secretion. |
What is Merocrine secretion? | Cells form a secretory product, store it in the cytoplasm in secretory vesicles, and release it by exocytosis. |
What is Apocrine secretion? | Vesicles with product accumulate in the apical portion of the cells. That portion pinches off from the rest of the cell to form the secretion. |