CIRCULATORY SYSTEM

Which of these is known as leucocytes?

• plasma

• platelets

• red blood cells

• white blood cells

Which of these blood vessels carry blood back to the heart?

• aorta

• capillaries

• veins

• arteries

Which structure of the heart that prevents the oxygen-rich blood from mixing with oxygen-poor blood?

• atria

• septum

• valves

• ventricles

Which side of the heart carries deoxygenated blood?

• bottom

• center

• left

• right

Which of the following is referred to as the "river of life".

• blood

• brain

• heart

• lungs

Which of the following is the largest artery in the body?

• aorta

• vena cava

• pulmonary veins

• pulmonary artery

Which of the following are tubes that serve as passageways for blood to reach the different parts of the body?

• blood cells

• bloos vessels

• bronchi

• esophagus

Which of the following is the function of the pulmonary vein?

• It carries OXYGEN-POOR blood from the lungs to the heart.

• It carries OXYGEN-RICH blood from the heart to the lungs.

• It carries OXYGEN-RICH blood from the lungs to the heart.

• It carries OXYGEN-RICH blood from the heart to the lungs.

The circulatory system is responsible for carrying and transporting oxygen and nutrients throughout the body.

• TRUE

• FALSE

The human heart has three chambers

• TRUE

• FALSE