The diagram below represents the simplified pathway of the circulation of blood. Study the same and answer the following questions.
(i) Name the blood vessels labelled 1 and 2.
(ii) State the function of blood vessels labelled 5 and 8.
(iii) What is the importance of the blood vessel labelled 6?
(iv) Which blood vessel will contain a high amount of glucose after a meal ?
(v) Draw a diagram of the different blood cells as seen in an amino acids smear of human blood.

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Solution

The given diagram represents the simplified pathway of the circulation of blood. The correct labelling is as follows
(i) The blood vessels labelled 1 and 2 are anterior vena cava (superior vena cava) and aorta respectively.
(ii) The blood vessel 5 carry oxygenated blood from the aorta (heart to the liver). The blood vessel 8 carries deoxygenated blood from the posterior body to the right auricle of the heart.
(iii) This blood vessel 6 contain blood with absorbed food and toxins which are drained in the liver where it is detoxified.
(iv) Hepatic portal vein contains a high amount of glucose after the meal.
(v) Refer to the attached image.

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