hce_kmu
110年
普通生物及生化概論
第 58 題
The form and function of nephrons in vertebrate kidney have a different adaptation to meet their requirements for osmoregulation. Which one is CORRECT?
- A Freshwater fishes conserve salt in their proximal tubules and excrete large volumes of dilute urine.
- B Amphibians conserve water on land by reabsorbing water from collecting duct.
- C Mammals that inhabit in fresh water have relatively long loops of Henle.
- D Birds have shorter loops of Hendle.
- E Most reptiles excrete uric acid by juxtamedullary nephron.
思路引導 VIP
請思考一下：若一種動物主要生活在水分極度充沛的淡水環境中，或者它能將廢物轉化為幾乎不含水的尿酸結晶排出，那麼它對於「建立強大的滲透壓梯度以回收水分」的需求，會比生活在乾旱沙漠的哺乳動物更高還是更低呢？這種需求上的差異，通常會如何反映在腎臟內管狀構造的物理長度上？