Exploring the Circulatory System

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

• To filter blood

• To pump blood throughout the body

• To produce blood cells

• To store oxygen

Identify the type of blood vessel that carries blood away from the heart.

• Veins

• Capillaries

• Arteries

• Venules

Explain the role of capillaries in the circulatory system.

• They transport oxygenated blood to the heart.

• They connect arteries and veins and facilitate the exchange of oxygen, carbon dioxide, and nutrients.

• They store blood for emergencies.

• They regulate blood pressure.

Which part of the heart is responsible for receiving deoxygenated blood from the body?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

Describe the process of systemic circulation.

• It involves the movement of blood from the heart to the lungs and back.

• It involves the movement of blood from the heart to the rest of the body and back.

• It involves the movement of blood within the heart chambers.

• It involves the movement of blood from the heart to the brain and back.

What is the primary molecule responsible for oxygen transport in the blood?

• Hemoglobin

• Plasma

• White blood cells

• Platelets

How does the body regulate blood pressure?

• By increasing the number of red blood cells

• By adjusting the diameter of blood vessels and altering heart rate

• By changing the composition of blood plasma

• By producing more white blood cells

Which of the following is a common cardiovascular disease?

• Diabetes

• Hypertension

• Asthma

• Arthritis

Explain how atherosclerosis affects blood flow in the circulatory system.

• It increases the elasticity of blood vessels, improving blood flow.

• It narrows and hardens arteries, reducing blood flow and increasing blood pressure.

• It causes blood vessels to expand, decreasing blood pressure.

• It enhances the oxygen-carrying capacity of blood.

What is the function of the left ventricle in the heart?

• To receive oxygenated blood from the lungs

• To pump oxygenated blood to the rest of the body

• To receive deoxygenated blood from the body

• To pump deoxygenated blood to the lungs