08b: Glands and Secretion Flashcards
Subtypes of glands.
Endocrine and exocrine
Subtypes of endocrine glands.
Unicellular and multicellular
Subtypes of exocrine glands.
Unicellular and multicellular
“Simple” and “compound” (X) glands are (uni/multi)-cellular.
X = exocrine
Multicellular
Exocrine glands secrete into:
Lumin (apically)
Endocrine glands secrete into:
Blood vessels (basally)
A glandular cell with no storage granules likely has which characteristic of secretion?
Constitutive (not regulated)
List the various mechanisms of exocrine secretion.
- Merocrine
- Apocrine
- Holocrine
- Active transport
Most common mechanism of secretion:
Merocrine
In Merocrine secretion, how is the secretory content released?
From membrane-bound secretory granules that fuse with apical cell membrane
In (merocrine/apocrine) secretion, the secretory product within cell isn’t membrane bound.
Apocrine
In apocrine secretion, how is the secretory content released?
Released from apical surface, surrounded by plasmalemma
In holocrine secretion, how is the secretory content released?
Secretory cell bursts and its entire content, including cell debris, is secreted
Give examples of (endocrine/exocrine) secretion by active transport.
Exocrine; Parietal cells (transport HCl into stomach)
Secretion that’s high in glycoproteins and lower in protein content is called:
Mucous