<prompt> Answer this question truthfullyWhat is the process by which Ca2 is reabsorbed in the nephron, and what are the specific channels and exchangers involved in this process?  <response>: <reason> Ca2 is reabsorbed in the distal convoluted tubule DCT of the nephron, and this process involves an apical Ca2 channel and a basolateral Na-Ca2 exchanger. 