Human Circulatory System Heart Blood Vessels_Unsolved Paper
Chapter: Life Processes | Topic: Human Circulatory System Heart Blood Vessels
HUMAN CIRCULATORY SYSTEM HEART BLOOD VESSELS_UNSOLVED PAPER
Topic: Human Circulatory System Heart Blood Vessels
Q1. Which organ acts as the pumping organ of the human circulatory system?
- Kidney
- Lung
- Heart
- Liver
Q2. Which blood vessel carries oxygen-rich blood from the heart to different parts of the body?
- Vein
- Artery
- Capillary
- Venule
Q3. The exchange of oxygen, nutrients, and waste materials between blood and body cells mainly takes place in:
- Arteries
- Veins
- Capillaries
- Aorta
Q4. Which chamber of the heart pumps oxygenated blood to the entire body?
- Right atrium
- Right ventricle
- Left atrium
- Left ventricle
Q5. A student notices that the pulse rate increases after playing football. Which organ is mainly responsible for this change?
- Stomach
- Heart
- Liver
- Pancreas
Q6. Which blood vessel carries blood from the body back to the heart?
- Artery
- Vein
- Capillary
- Pulmonary artery
Short questions
Q1. State any two differences between arteries and veins.
Q2. What are capillaries? Mention their importance in the circulatory system.
Q3.Why is the human heart called a double pump?
Q4.During a school race, a student's heartbeat becomes faster than usual. Explain why this happens.
Q5.Describe the functions of the four chambers of the human heart.
Q6.Why are valves present in the heart and veins?
Q1. Describe the structure of the human heart. Explain the pathway of blood through its four chambers and the major blood vessels connected to it.
Q2. Compare arteries, veins, and capillaries with respect to:
Structure
Direction of blood flow
Blood pressure
Presence of valves
Main function
Present your answer in a suitable table.
Q3. During a health check-up camp, students are asked to measure their pulse rate before and after exercise. Explain why the pulse rate changes after physical activity and how the heart and blood vessels respond to increased oxygen demand.
Q1. Read the following case:
A doctor explains to a patient that regular exercise strengthens the heart and improves blood circulation throughout the body.
Based on your understanding of the circulatory system:
Explain how the heart pumps blood during circulation.
Describe the role of arteries, veins, and capillaries.
Discuss how regular physical activity supports healthy circulation.
Q2. A biology teacher prepares the following flow chart:
Heart → Arteries → Capillaries → Veins → Heart
Explain the movement of blood through each stage of the flow chart and describe the function of each blood vessel involved.
Q3. Read the following observations:
The heart contracts continuously throughout life.
Oxygen-rich blood reaches every body cell.
Carbon dioxide is transported back to the lungs.
Blood flows through different types of blood vessels.
Using these observations, explain how the human circulatory system maintains an efficient supply of oxygen and nutrients while removing waste products from the body.