Question

We also observe that urea is in the filtrate of the renal tubule. What is urea,...

We also observe that urea is in the filtrate of the renal tubule.

What is urea, and where is it produced?

Name three types of ions that are secreted into the renal tubule.

How does the filtrate in the renal tubule differ from the urine that will eventually leave the collecting duct and drain into the renal pelvis?

Homework Answers

Answer #1

Answer

  1. Urea is nitrogenous waste product produced during protein metabolism. It is produced in the liver.

  2. The three main ions ions secreted in to the renal tubule are : H+ (hydrogen ions) , K+ (potassium ions) and HCO3- (bicarbonate ions).

  3. - Filtrate in renal tubule has components similar to blood plasma except plasma proteins. Urine only contains water, nitrogenous wastes, ions, drugs and hormones.
    - About 180 liters of filtrate is formed in a day from which only 1.5 to 2 liters is converted to urine.
    - Concentration of filtrate changes in different sections of renal tubule while concentration of urine drained in renal pelvis remains same in entire urinary tract.
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