Amino acids, glucose, vitamins and other organic molecules are (actively/passive

Question

Amino acids, glucose, vitamins and other organic molecules are (actively/passively) transported out the reabsorbed back into blood. In PCT, water is reabsorbed by 8. convoluted tubule and are 9. (active/passive transport). 10. Sodium chloride is reabsorbed by (active/passive) transport along the (active/passive) lower portion of the ascending loop of Henle and by transport along the upper portion of the ascending loop of Henle. 11. Secretion of ammonia, H' and other toxic chemicals takes place mainly in the convoluted tubule CONNECT WITH THE CONCEPTS Beavers spend a lot of time swimming in lakes and end up drinking a lot of water, while kangaroo rats live in the desert and need to conserve water. Search the internet to describe differences in the length of their Loop of Henle and its effect on urine concentration and their need for water regulation. 1. Refer to your textbook to describe how the following hormones are involved in osmoregulation a. Antidiuretic hormone (ADH): 2. b. Renin-angiotensin-aldosterone system (RAAS): What will happen to a person who has ADH deficiency?

Explanation / Answer

8. Amino acids, glucose, vitamins and other organic molecules are passively transported out the proximal convulated thbule and are reabsorbed back into blood.

9. In PCT, water is reabsorbed by pasive transport.

10. Sodium chloride is reabsorbed by passive transprt lower portion of the ascending loop of henle and by active transport along the upper portion of the ascending loop of henle.

11. Secretio of ammonia, H+ and other toxic chemicals takes place mainly in the proximal convoluted tubule.

1. Kangaroo rats have nephrons with long loops of henle to increase their survival in desert. And this desert adapted animal produce a very concentrated urine.

2. Osmoregulation is the maintainance of constant osmotic pressure in the fluids of an organism by the control of water and salt concentration.

a. ADH constantly regulates and balance the amount of water in blood. Higher water concentration increases the volume and pressure of blood.

b. RAAS is a hormone system that regulates blood pressure and fluid balance.

Due to the deficiency of ADH central diabetes insipidus is a rare water metabolism disorder.

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