The Human Heart and Circulation Quiz

What are the basic needs of cells in the human body?

• Access to carbon dioxide, a source of vitamins, a balanced fluid environment, removal of glucose

• Access to oxygen, a source of glucose, a balanced fluid environment, removal of waste

• Access to nitrogen, a source of fat, a balanced pH environment, removal of water

• Access to water, a source of protein, a balanced electrolyte environment, removal of toxins

What is the function of the alveoli in the lungs?

• To release carbon dioxide molecules from the blood stream

• To produce mucus for lung protection

• To absorb oxygen molecules into the blood stream

• To filter out impurities from the air

What is the role of hemoglobin in the blood?

• To break down glucose for energy production

• To bind to oxygen molecules and transport them in the blood stream

• To regulate blood pressure in the body

• To produce white blood cells for immune response

What is the purpose of the right ventricle in the heart?

• To store excess blood for emergencies

• To regulate the body's temperature

• To pump deoxygenated blood to the lungs

• To pump oxygenated blood to the body

Why does the human body have two ventricles in the heart instead of one?

• To provide a reserve of blood for emergencies

• To accommodate different blood types in the body

• To allow for backup in case one ventricle fails

• To maintain different pressure levels for efficient blood circulation

What is the significance of the pressure difference between the right and left ventricles?

• It allows for optimal gas exchange in the lungs without broken capillaries

• It prevents blood from reaching the body too quickly

• It helps in maintaining a stable heart rate

• It regulates the body's immune response

What happens to the blood pressure after passing through the lungs?

• It fluctuates depending on the body's activity

• It increases to a higher pressure level

• It decreases to a lower pressure level

• It remains the same as before

Why is it important for the pulmonary circulation to have lower pressures?

• To maintain a stable heart rate

• To prevent blood from reaching the body too quickly

• To regulate the body's immune response

• To allow for optimal gas exchange in the lungs without broken capillaries

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

• To forcefully push oxygenated blood through the arteries and capillaries of the body

• To store excess blood for emergencies

• To regulate the body's temperature

• To receive deoxygenated blood from the body

What would happen if there was no heart in the human body?

• Oxygen molecules would take a really long time to reach the body's cells

• The body's cells would die due to lack of oxygen

• The body's cells would find an alternative source of oxygen

• The body's cells would adapt to survive without oxygen