Pop Quiz 1

Which heart chamber receives deoxygenated blood from the body through two large veins: the superior vena cava (from the upper body) and the inferior vena cava (from the lower body).

• right ventricle
• right atrium
• left atrium

Which heart chamber sends blood through the tricuspid valve to the right ventricle. It also receives deoxygenated blood from the coronary sinus (the veins that drain blood from the heart tissue itself).

This chamber is thinner-walled compared to the ventricles, as it only has to push blood into the right ventricle, which requires less force.

• right ventricle
• right atrium
• left atrium

Which heart chamber receives oxygenated blood from the lungs via the pulmonary veins (the only veins in the body that carry oxygenated blood).

• left atrium
• left ventricle
• right atrium

Which heart chamber sends blood through the bicuspid (mitral) valve into the left ventricle.

Similar to the right atrium, it is also a thin-walled chamber because it only needs to push blood into the left ventricle, which is a relatively short distance.

This chamber's role is crucial for ensuring that oxygen-rich blood is sent to the left ventricle for distribution to the rest of the body.

• left ventricle
• left atrium
• right atrium

Which heart chamber receives deoxygenated blood from the right atrium and pumps it into the pulmonary trunk, which leads to the pulmonary arteries that carry the blood to the lungs for oxygenation.

• right atrium
• right ventricle
• left atrium

Which heart chamber has a thinner muscular wall compared to the left ventricle because it only needs to pump blood a short distance to the lungs. It has a pulmonary semilunar valve to prevent blood from flowing back into it after it has been pumped into the pulmonary arteries.

• left atrium
• right atrium
• right ventricle

Which heart chamber receives oxygenated blood from the left atrium and pumps it through the aortic valve into the aorta, which distributes oxygen-rich blood throughout the entire body.

• right ventricle
• right atrium
• left ventricle

Which chamber is the thickest-walled chamber of the heart because it has to generate much more force to pump blood throughout the body (against higher resistance). It is responsible for systemic circulation, making it much more powerful compared to the right ventricle.

The aortic valve prevents the backflow of blood into the it after it’s pumped into the aorta.

• Pulmonary artery
• Right ventricle
• Left ventricle

The right side of the heart (right atrium and ventricle) pumps blood to the lungs (pulmonary circulation), which requires low pressure. The left side (left atrium and ventricle) pumps blood to the entire body (systemic circulation), which requires high pressure because the body’s vascular system is much more extensive and offers greater resistance.

• True

• False

The left ventricle has the thickest walls because it must pump blood under high pressure, while the right ventricle has thinner walls as it only pumps blood a short distance to the lungs.

• True

• False