Glands Flashcards
Where are glands derived from?
Epithelial surfaces
Define stroma
Connective tissue component that supports parenchyma
Parenchyma
Epithelial component of the gland
What is the difference between exocrine and endocrine glands?
- Exocrine glands have ducts and secretions pass onto an epithelial suface
- Endocrine glands DO NOT have ducts and secretions enter blood or lymphatic streams
Define merocrine (eccrine) secretion.
Cells remain intact and the product is exocytosed through the membrane
What is apocrine secretion?
A portion of the cell is lost during secretory process.
What is holocrine secretion?
Entire cell becomes part of secretory product.
What does a serous gland secrete?
- Thin, watery secretion
- Nuclei rounded and are seen near base of cell
What is the nature of secretory product of a mucous gland?
- Viscous, slippery secretion
- Nuclei flattened against base of cells
What is a serous demilune?
The serous portion of a mixed gland (contains both mucous and serous secretory portions); crescent-shaped groups of serous cells capping mucous secreting units.
What are myoepithelial cells?
Function to help secretory process by pressing on secretory cells. Found in sweat, mammary, and salivary glands.
What do Goblet cells do?
Secrete mucous.
What different types of macromolecules may be manufactured for purposes of secretion?
- Proteins
- Lipids
- Protein-Carb complexes
