A. False It is mediated through a vagal reflex and is absent in vagotomized stomachs.
B. False This delays gastric emptying.
C. True Histamine from mast-like cells activates H2 receptors, acetylcholine from parasympathetic nerve endings activates M1 receptors and gastrin activates gastrin receptors.
D. True The neural/hormonal mechanisms responsible for the inhibition are not certain.
E. False The normal rate is around 3/minute.