Name the three filtration barriers that solutes must come across as they move from plasma to the lumen of Bowman's capsule. What components of the blood are usually excluded by these layers?

What forces promote glomerular filtration? What forces opposes them? What is meant by net filtration pressure?

In which segment of the nephron most of the re-absorption of substances takes place?

When a molecule or ion is reabsorbed from the lumen of the nephron, where does it go? If a solute is filtered and not reabsorbed from the tubule, where does it go?

Match each of the following substances. with its mode of transportation in proximal tubular reabsorption.

(a) Na+	Simple diffusion
(b) Glucose	Primary active transport
(c) Urea	Indirect active transport
(d) Plasma	Paracellular movement
(e) Proteins	Facilitated diffusion
(f) Water	Endocytosis