Lecture 6 Glandular Tissue (Epithelial) Flashcards
What is a gland?
Organ composed primarily of epithelium that synthesize + secrete some specialized product
What do glands secrete?
1) Proteins (serous= water) Pancreas –enzymes for digestion 2) Lipids Adrenal –hormones Sebaceous - oil 3) Carbohydrates and protein (mucous) Salivary
What gland secretes all 3 types.
Mammary
What are the two gland types?
Endocrine, exocrine
______ glands secrete substances to specific organs via duct systems. ______ glands produce hormones and are always rich in capillaries
Exocrine, endocrine
How are endocrine glands well vascularized if epithelia are not vascularized?
Secrete into blood stream either directly or through interstitial space.
True or False: Endocrine glands are of epithelial origin.
True
What type of gland is this? What are the structures within?
Endocrine, pancreatic islets, C=capillaries
What is the secretion portion of an exocrine gland?
Acinus
What are the 3 types of exocrine structures?
Tubular, acinar, alveolar (hole)
Mucous glands of the colon, intestinal glans of crypts are examples of ______ shape of glands.
Simple tubular
Glands in the uterus and stomach are examples of _____ shape of gland.
Branched tubular
Sweat glands are an example of _____ shape of gland.
Coiled tubular
mucous glands along urethra is an example of _____ shape of gland.
Acinar (or alveolar)
Sebaceous glands are an example of _____ shape of gland.
Branched acinar
Mucosal glands of the duodenum is an example of _____ shape of gland.
Compound tubular
Exocrine pancreas is an example of _____ shape of gland.
Compound acinar (alveolar)
Salivary glands is an example of _____ shape of gland.
Compound tubuloacinar
______ secretion releases products, usually containing -proteins, by means of exocytosis. ______ secretion is produced by the disintegration of the secretory cells themselves as they complete. ) ______ secretion involves loss of membrane-enclosed apical cytoplasm, usually containing one or more lipid droplets
Merocrine, holocrine, apocrine
What type of secretion is this an example of?
Holocrine (sebaceous gland)
What type of secretion is this an example of? What are the arrows pointed to?
Apocrine (mammary gland), blebbing
Serous cells are examples of what type of secretion? and what do they usually contain?
merocrine, secretory granules
- very eosinophilic
______ of salivary glands are typically larger than serous cells, with flattened basal nuclei. ___ and ___ stain mucous poorly whereas _____ stains strongly.
Mucous, H&E, PT, PAS
______ surround serous salivary gland cells and squeeze to help release contents help fluid flow
Myoepithelial
