Blood Circulation System

Open-ended: Explain the pathway of blood circulation starting from the right atrium.

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What is the main function of arteries in the human body?

• To carry blood away from the heart

• To carry blood towards the heart

• To produce blood cells

• To filter blood

Which of the following statements is true about veins?

• They carry oxygenated blood only.

• They have thicker walls than arteries.

• They carry deoxygenated blood back to the heart.

• They do not have valves.

Open-ended: Describe the difference between oxygenated and deoxygenated blood.

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Match the following parts of the heart with their functions:

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Fill in the blank: The __________ are small cell fragments that help in blood clotting.

What is the role of blood plasma in the circulatory system?

• To transport oxygen

• To carry nutrients and waste products

• To form blood clots

• To fight infections

What is the primary function of red blood cells?

• To fight infections

• To transport oxygen

• To help in blood clotting

• To carry nutrients

Which type of blood cell is primarily responsible for fighting infections?

• Red Blood Cells

• White Blood Cells

• Platelets

• Plasma

It is a fluid that circulates around the body.

• blood

• heart

• blood vessels