Ryan ate a late meal at a cheap diner on the way home from work. A couple of hours later, he vomited three times, and then he consumed several packages of an antacid (mostly NaHCO3) over the next several hours. By the evening of the next day, he was feeling better. During this ordeal, his blood pH did not deviate significantly. Select the mechanism(s) that helped maintain Harry’s pH within a normal range. (1) decreased respiratory rate (2) decreased H secretion by the renal tubule (3) increased respiratory rate (4) increased H secretion by the renal tubule