Understanding Double Circulation

What is the primary function of the double circulation system in the human body?

• To circulate blood only to the lungs

• To circulate blood through two separate circuits

• To circulate blood only to the brain

• To circulate blood only to the digestive system

In the pulmonary circuit, where does the deoxygenated blood go after leaving the right ventricle?

• To the liver

• To the systemic aorta

• To the lungs

• To the left atrium

What happens to the blood in the lungs during the pulmonary circuit?

• It becomes deoxygenated

• It is filtered for waste

• It is oxygenated

• It is cooled down

Which vessel carries oxygenated blood from the left ventricle to the body?

• Pulmonary artery

• Superior vena cava

• Systemic aorta

• Hepatic portal vein

What is the role of the hepatic portal system in circulation?

• To carry blood from the brain to the heart

• To carry blood from the heart to the lungs

• To carry blood from the intestines to the liver

• To carry blood from the liver to the heart