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Activity 3


In this activity you are provided with a video. Identify the substance reabsorbed in the loop of Henle and name the process of reabsorption.

True-False Question

State whether true or false.

Question 1

1. The loop of Henle is between the Distal Convoluted tubule and the Proximal convoluted tubule.

Question 2

2. The flow of the glomerular filtrate down the descending limb and up the ascending limb creates a counter-current  system in the loop of henle. This ensures that the concentration gradient remains high and hence increases the rate of reabsorption of water at the descending limb.

Question 3

3. Water is reabsorbed in the descending loop of Henle

Question 4

4. Water in the loop of Henle  is reabsorbed through diffusion.

Question 5

5. Glucose is reabsorbed in the loop of Henle.

Reading Activity

Loop of henle

The glomerular filtrate flows into the loop of  henle from the proximal convoluted tubule.

 

The wall of the descending limb is highly permeable to water and solutes allowing for water to be reabsorbed by osmosis.

The wall of the ascending loop of henle is relatively  impermeable to water, hence as the filtrate flows in it, water is not reabsorbed but instead salts are actively pumped out making the filtrate less concentrated.

 

The flow of the glomerular filtrate down the descending limb and up the ascending limb creates a counter-current  system in the loop of henle. This ensures that the concentration gradient remains high and hence increases the rate of reabsorption of water by osmosis at the descending limb.

Discuss the process of counter current flow