The primary components of the ECF are:
(a) Lymph and cerebrospinal fluid
(b) Plasma and serous fluids
(c) Interstitial fluid and plasma
(d) All of these

In response to excess water in the body, 

(a) Antidiuretic hormone is secreted by the anterior lobe of the pituitary gland.

(b) The active transport mechanisms in the ascending thick limb of the nephron loop cease functioning.

(c) The permeability of the distal convoluted tubules and collecting ducts to water is decreased.

(d) The permeability of the ascending limb of the nephron loop is increased.

(e) The glomerular filtration rate is reduced.

The osmotic concentration of the ECF decreases if an individual gains water without a corresponding:

(a) Gain of electrolytes

(b) Loss of water

(c) Fluid shift from the ECF to the ICF

(d) All of these

Why should a person with a fever drink plenty of fluids?

Exercise physiologists recommend that adequate amounts of fluid be ingested before, during, and after exercise. Why is fluid replacement during extensive sweating important?

The principal anions in the ICF are:

(a) Phosphate and proteins (Pr⁻)

(b) Phosphate and bicarbonate

(c) Sodium and chloride

(d) Sodium and potassium

Drinking a solution hypotonic to the ECF causes the ECF to:

(a) Increase in volume and become hypertonic to the ICF

(b) Decrease in volume and become hypertonic to the ICF

(c) Decrease in volume and become hypotonic to the ICF

(d) Increase in volume and become hypotonic to the ICF

What are fluid shifts? What is their function, and what factors can cause them?

Osmoreceptors in the hypothalamus monitor the osmotic concentration of the ECF and secrete _______ in response to higher osmotic concentrations. 

(a) BNP

(b) ANP

(c) aldosterone

(d) ADH