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Which of the following is responsible in the distribution of nutrients, dissolved gases and materials into the different parts of the body?

• Digestive System

• Respiratory System

• Circulatory System

• Immune System

Which of the following statement is TRUE about arteries?

• Some of the arteries are thin-walled that can withstand low pressure of the blood.

• All arteries carry blood away from the heart to the different parts of the body.

• The deoxygenated gas is brought by all the arteries which will be eliminated through respiration.

• The valves are present in these structures that are inferior towards the heart.

Which of the following statements is TRUE about veins?

• Veins carry blood away from the heart to the different parts of the body.

• Veins have thinner walls compared to arteries.

• All veins carry oxygenated blood.

• Veins are responsible for the absorption of nutrients from food.

What is the primary function of the heart in the circulatory system?

• To filter waste products from the blood.

• To pump blood throughout the body.

• To produce hormones that regulate blood pressure.

• To facilitate gas exchange in the lungs.

Which component of the blood is primarily responsible for transporting oxygen?

• White blood cells

• Platelets

• Red blood cells

• Plasma

What is the role of plasma in the circulatory system?

• To transport nutrients and hormones.

• To produce red blood cells.

• To facilitate gas exchange in the lungs.

• To filter waste products from the blood.

Which type of blood vessel is primarily involved in the exchange of gases and nutrients?

• Arteries

• Veins

• Capillaries

• Venules

What is the primary function of the red blood cells?

• To fight infections.

• To transport carbon dioxide.

• To carry oxygen to the body's tissues.

• To help in blood clotting.

Which of the following statements is TRUE about capillaries?

• Capillaries have thick walls to withstand high pressure.

• Capillaries are the smallest blood vessels in the body.

• All capillaries carry deoxygenated blood.

• Capillaries are responsible for transporting hormones only.

What is the primary role of the heart valves?

• To prevent backflow of blood.

• To increase blood pressure.

• To produce red blood cells.

• To facilitate nutrient absorption.