Question

The following simple diagram refers to the outline of the circulation of blood in 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 contains the highest concentration of urea?
b) Which vessel would contain the highest concentration of amino acid and glucose soon after a meal?

Answer 1

There are three circuits that separate the mammalian circulatory system: the systemic circuit, the pulmonary circuit, and the coronary circuit. Blood is pumped into the right atrium of the heart, then into the right ventricle, from the veins of the systemic circuit.

Complete answer:
1. pulmonary Vein
2. Aorta
3. Hepatic Artery
4. Portal vein
5. Renal artery
6. Renal vein
7. Hepatic vein
8. Inferior Vena Cava
9. Pulmonary artery

The hepatic vein has the highest concentration of urea.Kidneys excrete urea, so urea and other nitrogenous waste are the least contained in the blood vessels that leave the kidneys.

Proteins that are broken down into amino acids are found in food. By breaking down excess amino acids into urea, the liver is functional. The liver thus has the highest urea concentration, since it is the main site for the manufacture of urea. Hepatic veins bring oxygen-depleted blood out of the liver to the inferior vena cava.These veins originate from the liver lobule's central vein. No valves are found in the hepatic veins.

The highest concentration of amino acid and glucose soon after a meal is in the Hepatic portal vein.The liver breaks down excess amino acids into urea, which are formed as a result of protein breakdown. This urea is then carried out from the liver by the hepatic vein which leaves the liver.

Shortly after a meal, the hepatic portal veins have the highest blood glucose levels before sugar is post-hepatically diffused in the systemic circulation.

Thus, immediately after a meal, it is the hepatic portal vein that produces the highest amino acid and glucose concentration.

Note: Arteries, veins, and capillaries: the three major types of blood vessels. Blood vessels throughout the body flow with blood.Blood is transported by arteries away from the heart. The veins send blood back to the heart. In order to deliver and absorb oxygen, nutrients, and other substances, capillaries surround body cells and tissues.