The diagram below represents the simplified pathway of the circulation of blood. Study the same and answer the questions which follow:
(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 and amino acids after a meal?
(v) Draw a diagram of the different blood cells as seen in a smear of human blood.
1– Superior vena cava
2 – Aorta
(ii) Function of blood vessel 5 (Hepatic artery) – It supplies oxygenated blood to the liver.
Function of blood vessel 8 (Inferior vena cava) – It carries deoxygenated blood from the posterior parts of the body to the heart.
(iii) Importance of blood vessel 6 (Hepatic portal vein) – It carries nutrient laden blood from the gastrointestinal tract to the liver.
(iv) Blood vessel 6, i.e. hepatic portal vein.
(v) Different blood cells seen in a smear of human blood: