Reabsorption V: The Collecting Duct and Effects of ADH and Aldosterone

Practice: A 25-year-old man goes for a 10K run along the beach in San Diego on a hot, humid summer day. He sweats heavily and, as a result, becomes dehydrated. Which of the following describes the effect of this dehydration on his blood levels of anti-diuretic hormone (ADH)?

Practice: A 25-year-old man goes for a 10K run along the beach in San Diego on a hot, humid summer day. He sweats heavily and, as a result, becomes dehydrated. Which of the following describes the number of aquaporin channels inserted in the apical membrane of his collecting duct principal cells, relative to a normally hydrated person?

Practice: A 25-year-old man goes for a 10K run along the beach in San Diego on a hot, humid summer day. He sweats heavily and, as a result, becomes dehydrated. After his run he stops at the bathroom to urinate. Which of the following describes the osmolarity of his urine relative to a normally hydrated person?