Lecture 2; exocrine glands Flashcards
types of exocrine glandular epithelia
single cell gland, multicellular exocrine glands
describe single cell gland
individual secretory cells called mucous cells and secrete mucin; found in epithelia with independent scattered cells; filled with large secretory vesicles that look clear/foamy in a light microscope
3 characteristic to describe multicellular exocrine glands
1) structure of the gland
2) structure of secretory area
3) relationship between the two
what are the terms simple, branched and compound refer to?
a) simple glands (single duct gland)
b) compound- refers to the secretory area; several secretory areas share one duct
c) branched -refers to glands that whose duct divides one or more times on its way to the gland cells
example of simple tubular glands
intestinal glands
example of simple coiled tubular
merocrine sweat gland
example of simple branched tubular
gastric glands, mucus glands of oesophagus, tongue, duodenum
example of simple alveolar (acinar)
a stage in the embryonic development of simple branched glands.
example of simple branched alveolar
sebaceous glands
example of compound tubular
mucus glands in mouth, bulbourethral glands, seminiferous tubules of testes
examples of compound alveolar
mammary glands
examples of compound tubuloalveolar glands
salivary glands