(Pt.3) Glandular Epithelia Flashcards
Explain Glandular Epithelia
- Produce secretions (mainly proteins)- either endocrine or exocrine
Explain Exocrine glands
- Ductless- produce hormonees
Explain Exocrine glands
- glands, most w/ ducts
Explain Unicellular Exocrine
- no ducts- single cell- produce mucin (glycoprotein) which dissolves in H20 to produce mucous - goblet cells in intestines and respiratory mucosae
Explain Multicellular Exocrine
Have three parts:
- secretory unit, epithelial duct, and CT support (w/ blood vessels and nerves)
What is the structural classification of multicellular Exocrine glands
Based on either simple or compound
Simple glands:
- unbranched duct
Compound glands:
- branched duct
What is the more categorized secretory units of Multicellular Exocrine glands
tubular:
- if secretory cells form tubes
alveolar (acinar):
- if secretory cells form small, flask like sacs
tubuloalveolar:
- if they have both types of secretory units
What are the modes of secretion for Multicellular Exocrine glands
Merocrine glands:
-exocytosis, secretory vesicles
Holocrine glands:
- cell ruptures and secretion
Apocrine glands:
- cell apex pinches off and secretion
LOCATION for modes of secretion (multicellular exocrine glands)
Merocrine:
- pancreas, sweat glands, salivary
Holocrine:
- sebaceous
Apocrine:
- mammary gland
LOCATION of Simple tubular
- Intestine
LOCATION of Simple, Coiled tubular
- sweat glands
LOCATION OF Simple, branched tubular
- gastric glands
LOCATION of Compound tubular
- Brunner’s glands (SI)
LOCATION of Simple alveolar
- Seminal vesicle glands
LOCATION of Simple, branched alveolar
- Sebaceous
