EVERYDAY SCIENCE

Detailed explanation-1: -The heart consists of four chambers in which blood flows. Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium.

Detailed explanation-2: -A typical heart has two upper and two lower chambers. The upper chambers, the right and left atria, receive incoming blood. The lower chambers, the more muscular right and left ventricles, pump blood out of the heart.

Detailed explanation-3: -The heart is three chambered, but the ventricles are partially separated so some mixing of oxygenated and deoxygenated blood occurs except in crocodilians and birds.

Detailed explanation-4: -The answer is false. The human heart is made up of four compartments. There are two auricles which are also called as atrium. The atrium receives the deoxygenated blood.

Detailed explanation-5: -The human heart consists of 4 chambers-two atria and two ventricles. The upper chambers are called the left atrium and right atrium. The lower chambers are called the left ventricle and right ventricle.