YMCA Level 2 session 1 circulatory system

which of the following describes how blood moves through the 4 chambers of the heart

• Oxygenated blood from the left atria moves to the right ventricle

• Oxygenated blood from the left atria moves to the left ventricle

• Deoxygenated blood from the left atria moves to the right ventricle

• Deoxygenated blood from the right atria moves to the left ventricle

Answer explanation

Which of the following are part of the systemic circulatory system

• The left ventricle and the pulmonary arteries.

• The left ventricle and the aorta

• The right ventricle and the aorta

• The right ventricle and the pulmonary arteries.

Answer explanation

Which of the following statements about the structure of the heart are true?

• The ventricles are the smaller, superior chambers

• The ventricles are the larger, superior chambers

• The ventricles are the larger, inferior chambers

• The ventricles are the smaller, inferior chambers

Which of the following statements about the structure of the heart is true?

• The atria have more muscular walls

• The atria are the largest chambers

• The ventricles are the largest chambers

• The ventricles have less muscular walls

Which of the following describes the function of the aorta

• It carries oxygenated blood to the heart

• It carries deoxygenated blood to the heart

• It carries deoxygenated blood to the lungs

• It carries oxygenated blood to the body

Which of the following are part of the pulmonary circulatory system

• The right ventricle and the aorta

• The right ventricle and the pulmonary arteries

• The left ventricle and the aorta

• The left ventricle and the pulmonary arteries

Which of the following describes the structure of veins?

• All veins carry deoxygenated blood

• They have thinner less muscular walls than arteries

• They have thicker more muscular walls than arteries

• All veins carry oxygenated blood

Answer explanation

There are four pulmonary veins. They’re unique because they carry oxygenated blood. All other veins carry only deoxygenated blood.

Veins have thinner and less muscular walls. This is because veins have a lower level of pressure than arteries. So, their walls don’t need to be as thick to handle the pressure.