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Which blood v...

Question

Which blood vessel contains the highest concentration Of Urea?

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Solution

Explanation:
Urea is a by-product of amino acid catabolism in the liver. So the liver is the primary site for urea production.
The hepatic vein is connected to the liver.
It transports the deoxygenated blood with urea away from the liver to the inferior vena cava.
That’s why the hepatic vein contains the highest concentration of urea.

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The following simplified diagram refers to the outline plan of the circulation of blood in a mammal. Study the diagram and write the number and the name of the blood vessel mentioned in each case.

(a) Several hours after a meal containing a lot of protein, which vessel will contain the highest concentration of urea?
(b) Which vessel would contain the highest concentration of amino acids and glucose soon after a meal?

The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.

Parts indicated by the guidelines 1 to 8 are as follows :

1. Afferent arteriole from the renal artery;

2. Efferent arteriole

3. Bowman's capsule,

4. Glomerulus ;

5. Proximal convoluted tubule with blood capillaries;

6. Distal convoluted tubule with blood capillaries;

7. Collecting tubule;

8. U-shaped loop of Henle.

Study the diagram and answer the questions that follow;

(a) Where does ultrafiltration take place?

(b) Which structure contains the lowest concentration of urea?

(c) Which structure contains the highest concentration of urea?

(d) Which structure (normally) contains the lowest concentration of glucose?

(e) Where is most water reabsorbed?

Q. Which blood vessel contains the least amount of urea?

Name the blood vessel that has the highest concentration of urea after a protein-rich meal.

Q. The following simplified diagram refers to the outline plan of the circulation of blood in a mammal. Study the diagram and write the number and the name of the blood vessel in each case as mentioned ahead.
(a)Several hours after a meal containing a lot of protein, which vessel will contain the highest concentration of urea?
(b)Which vessel would contain the highest concentration of amino acids and glucose soon after a meal?

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