NURS 5334 Module 7 (NURS5334)

What does activation of H1 receptors cause?  H1 stimulation causes vasodilation of the skin, face, and upper body. o Extensive vasodilation can cause hypotension.  Increased capillary permeability causes edema.  Exogenous histamine can induce bronchial constriction, however histamine is not the cause of bronchoconstriction that occurs during a spontaneous asthma attack.  H1 receptors in the central nervous system play a role in sleep, cognition, and memory. Other effects includ...