GROSS ANATOMY

Detailed explanation-1: -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-2: -There are two atria (upper chambers) called your right atrium and left atrium. In addition, there are two ventricles (lower chambers) called your right ventricle and left ventricle. Each chamber plays an important role in your heart’s functioning.

Detailed explanation-3: -The atrium was formerly called the ‘auricle’. That term is still used to describe this chamber in some other animals, such as the Mollusca.

Detailed explanation-4: -The right atrium receives blood from the superior and inferior vena-cava. And the left atrium receives blood from the lungs through pulmonary veins. So, these two are called the receiving chambers of the heart. Was this answer helpful?

Detailed explanation-5: -Atria are your two upper heart chambers. You have a left atrium and a right atrium. Ventricles are your two lower heart chambers.