Question 12

Cells targeted by antidiuretic hormones (ADH) are located in part B.

Part B contains cells that are sensitive to antidiuretic hormones (ADH), which play a crucial role in regulating water balance in the body by influencing the kidneys' ability to reabsorb water.

A) A

Part A does not contain cells targeted by antidiuretic hormones (ADH). This option is incorrect as it does not participate in the function of water reabsorption that ADH influences.

B) B

Part B is the correct answer because it contains the relevant cells that respond to antidiuretic hormones (ADH). These cells are primarily found in the kidneys, where ADH facilitates water reabsorption, thus playing a key role in maintaining fluid balance.

C) C

Part C is incorrect as it lacks the specific cells that are targeted by ADH. The functions associated with ADH are not fulfilled in this part, making it irrelevant to the question.

D) D

Part D does not contain the cells that respond to antidiuretic hormones (ADH). Therefore, it is not the correct choice, as it does not relate to the mechanism of action of ADH in the body.

Conclusion

The correct answer is part B, as it specifically contains the cells that are responsive to antidiuretic hormones (ADH). All other options, A, C, and D, do not involve the target cells for ADH, thereby failing to meet the criteria set by the question regarding the hormonal regulation of water balance.