Identify the hormone responsible for increasing sodium ion retention and reabsorption.       Obj 25.6

A biological buffer:          Obj 25.1

What triggers the release of parathyroid hormone (PTH)?       Obj 25.7

Which cells release hydrochloric acid (HCl) into the stomach?          Obj 22.12

What is the major function of aquaporins?             Obj 24.13/ 24.15

The main force that “promotes” filtration in a nephron is:       Obj 24.10

How are lipids absorbed across the apical enterocyte membrane of the small intestine?        Obj 22.25

What is a major function of magnesium ions in the body?        Obj 25.7

Identify the role of the urinary system in acid-base balance.                           Obj 25.11 The kidneys can secrete bicarbonate ions when the pH of the blood (H+) rises. The kidneys contribute to acid-base balance by excreting fixed acids that the lungs cannot excrete. The kidneys can manufacture new bicarbonate ions when the pH of the blood falls towards acidity. The kidneys contribute to acid-base balance by controlling the concentration of bicarbonate ions in the blood.

Since her stomach was removed, Ms. Cho has the most difficulty initiating digestion of:          Obj 22.25