25. The Urinary System

What is the primary role of the collecting ducts in the urinary system?

Which of the following describes the order in which blood flows through the nephron?

Which of the following statements best describes the role of the nephron in the urinary system?

Which of the following is the countercurrent multiplier in the kidney?

The nephron is broken down into which two major portions?

The descending limb of the nephron loop is impermeable to the movement of which substance out of the tubule?

Which structure in the nephron, as shown in Figure 26-2, is primarily responsible for the filtration of blood?

What is the primary function of the loop of Henle in the nephron?

Which choice describes the countercurrent mechanism of the nephron loop?

In which region of the nephron is a steep osmotic gradient created?

Which structure do the collecting ducts empty directly into?

Which of the following correctly matches a region of the nephron with its primary function?

Which structure of the nephron is primarily responsible for filtering blood?

A nephron consists of which two main parts?

Approximately how many nephrons are found in a single human kidney?