Drugs such as Zantac and Tagamet helps to gastritis and ulcers by
A. blocking H2histamine receptors.
B. blocking H1histamine receptors.
C. inhibiting proton pumps.
D. killing bacteria.
People with diabetes mellitus have polyuria because
A.they have inadequate amounts of ADH.
B.they have greater oncotic pressure in the kidney tubules.
C.they have inadequate amounts of aldosterone.
D.they drink a lot of water.
Which of the following is NOT true of dendrites?
A. transmits action potentials toward the cell body
B. are thin extensions of the cell body
C. transmit graded electrochemical impulses toward the cell body