Human Circulatory System Quiz

A red blood cell leaves the aorta, travels through the body, and then reaches the capillaries of the air sacs. What is the correct order of the organs the red blood cell passes through?

• Liver, Lung, Small Intestine, and Heart.

• Lung, Heart, Small Intestine, and Liver.

• Small Intestine, Heart, Liver, and Lung.

• Small Intestine, Liver, Heart, and Lung.

If vessel X is connected to the lungs, it carries:

• Oxygenated blood to the heart.

• Oxygenated blood to the lungs.

• Deoxygenated blood to the heart.

• Deoxygenated blood to the lungs.

The highest blood pressure in the circulatory system occurs in:

• Left atrium.

• Right atrium.

• Left ventricle.

• Right ventricle.

When the microvessels continue to flow, the red blood cells will first return to:

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

When W contracts, which combination regarding the heart valves is correct?

• Open, Open

• Open, Closed

• Closed, Open

• Closed, Closed

Which of the following statements about the heart is correct?

• Z receives oxygenated blood from the lungs.

• Y and Z pump out the same volume of blood.

• The glucose content in X's blood is higher than in W's.

• The blood pumped by Y travels a longer distance before returning to the heart than that pumped by X.

The following photo shows an anatomized pig heart: Which of the following descriptions about chamber X is correct?

• It receives blood from the pulmonary veins.

• It pumps blood to the aorta.

• It receives blood from the vena cava.

• It pumps blood to the pulmonary artery.

The carbon dioxide produced in the small intestine is sent to the lungs for gas exchange. Which of the following shows the transport route of this carbon dioxide?

• Small intestine -> Lung

• Small intestine -> Liver -> Lung

• Small intestine -> Heart -> Lung

• Small intestine -> Liver -> Heart -> Lung

If you are a red blood cell, traveling through a certain vessel to the heart, after passing through the gate in the diagram, there is another gate ahead. Which chamber of the heart should you now be in?

• Left atrium

• Left ventricle

• Right atrium

• Right ventricle

Some babies are born with a heart defect, where there is a hole in the septum between the right ventricle and left ventricle. When both ventricles contract simultaneously, some blood flow deviates from the normal path. Which of the following is most likely the deviated path of this blood flow?

• Left ventricle -> Right ventricle -> Aorta

• Left ventricle -> Right ventricle -> Pulmonary artery

• Right ventricle -> Left ventricle -> Aorta

• Right ventricle -> Left ventricle -> Pulmonary artery