Biology
The diagram given below represents the simplified pathway of the circulation of blood. Answer the questions that follow:
(i) Name the blood vessels labelled 1 to 4.
(ii) Which blood vessel supplies oxygenated blood to the muscles of the heart?
(iii) What is the importance of blood vessel labelled 5?
(iv) What is the type of blood circulation that takes place between the heart and the lungs?
(v) Draw a diagram of the different blood cells as seen in a smear of human blood.
Circulatory System
ICSE 2020
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Answer
(i)
- 1 → Anterior vena cava
- 2 → Aorta
- 3 → Pulmonary artery
- 4 → Pulmonary vein
(ii) Coronary Artery
(iii) Blood vessel labelled as 5 is the hepatic portal vein. It serves as a critical connection between the digestive system and the liver, allowing for nutrient processing, detoxification, and regulation of various metabolic functions.
(iv) Pulmonary circulation
(v) Below diagram shows the different blood cells as seen in a smear of human blood:
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