Chapter 12: Problem 2

Figure 12.4 Which of the following statements about the nephron is false? a. The collecting duct empties into the distal convoluted tubule. b. The Bowman's capsule surrounds the glomerulus. c. The loop of Henle is between the proximal and distal convoluted tubules. d. The loop of Henle empties into the distal convoluted tubule.

Short Answer

Expert verified

a) The collecting duct empties into the distal convoluted tubule. b) The Bowman's capsule surrounds the glomerulus. c) The loop of Henle is between the proximal and distal convoluted tubules. d) The loop of Henle empties into the distal convoluted tubule. Answer: a) The collecting duct empties into the distal convoluted tubule.

Step by step solution

1. Understand the structure of the nephron

To determine which statement is false, we should first understand the structure of the nephron. The nephron consists of several parts such as the Bowman's capsule, the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule, and the collecting duct.

2. Analyze statement a

"The collecting duct empties into the distal convoluted tubule." Analyzing the nephron's structure, the collecting duct actually empties not into the distal convoluted tubule, but into the renal pelvis and then into the ureter leading to the bladder. This statement is false.

3. Analyze statement b

"The Bowman's capsule surrounds the glomerulus." This statement is true. The Bowman's capsule is a cup-shaped structure surrounding the glomerulus, which is a network of capillaries involved in the initial filtration of blood within the nephron.

4. Analyze statement c

"The loop of Henle is between the proximal and distal convoluted tubules." This statement is true. The loop of Henle is a long U-shaped structure between these two tubules. It plays a crucial role in the concentration and dilution of urine by reabsorbing water and electrolytes.

5. Analyze statement d

"The loop of Henle empties into the distal convoluted tubule." This statement is true. The loop of Henle indeed empties into the distal convoluted tubule, which modifies the filtrate by reabsorbing some substances and secreting others. Answer: The false statement among the given options is (a) "The collecting duct empties into the distal convoluted tubule."

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Short Answer

Step by step solution

1. Understand the structure of the nephron

2. Analyze statement a

3. Analyze statement b

4. Analyze statement c

5. Analyze statement d

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