Histamine Receptors Flashcards
1
Q
Response to Stimulation, Pain & Pruritus, Contraction, Bronchoconstriction, Vascular, Smooth muscle Vasodilation
A
H1 RECEPTOR
2
Q
Response to Basal acid gastric secretion Histamine- Most potent stimulus of acid secretion and acts at
Common mediator
A
H2 RECEPTOR
3
Q
Response to Further inhibition of release of
Histamine
A
H3 RECEPTOR
4
Q
Response to Leukocyte chemotaxis to sites of inflammation
A
H4 RECEPTOR
5
Q
Distributed in:
CNS
Sensory nerve endings
Endothelial cells
Bronchial smooth muscle
Vascular smooth muscle
A
H1 RECEPTOR
6
Q
Distributed in:
Gastric mucosa
Cardiac muscle
Mast cells
Brain
A
H2 RECEPTOR
7
Q
Distributed in:
Presynaptic nerve terminals
Brain
Myenteric plexus
A
H3 RECEPTOR
