**Question:** True about anatomy of right ventricle:

A. It receives deoxygenated blood from the body
B. It is responsible for supplying oxygenated blood to the brain and lungs
C. It is the largest chamber of the heart
D. It is the first chamber of the heart receiving oxygenated blood

**Correct Answer:** .

**Core Concept:** Anatomy of the Right Ventricle

The right ventricle is a vital part of the cardiac cycle, responsible for pumping deoxygenated blood from the body back to the lungs for oxygenation and then distributing oxygenated blood to the rest of the body. It is the third chamber of the heart, following the atria and the pulmonary artery.

**Why the Correct Answer is Right:** The right ventricle receives deoxygenated blood from the body through the pulmonary veins, which return deoxygenated blood from the systemic circulation to the right atrium. From the right atrium, the blood is then pumped into the right ventricle via the tricuspid valve. Once filled, the right ventricle contracts, pushing deoxygenated blood into the pulmonary artery, which carries it to the lungs for oxygenation.

**Why Each Wrong Option is Incorrect:**

A. Receiving deoxygenated blood is accurate but not specific to the right ventricle. This option is partially correct as all ventricles receive deoxygenated blood, but it does not accurately describe the role of the right ventricle.

B. Supplying oxygenated blood to the brain and lungs is incorrect for the right ventricle. The right ventricle delivers deoxygenated blood to the lungs for oxygenation, with oxygenated blood then being supplied to the body via the systemic circulation.

C. Being the largest chamber of the heart is only partially true. While the right ventricle is larger than the left ventricle, the left ventricle is larger than both the right ventricle and right atrium combined.

D. Serving as the first chamber receiving oxygenated blood is incorrect. The right ventricle receives deoxygenated blood from the body, not oxygenated blood.

**Why the Correct Answer is Right:**

The right ventricle plays a crucial role in the cardiac cycle by receiving deoxygenated blood from the body (via the pulmonary veins) and pumping it into the lungs for oxygenation before distributing it to the rest of the body via the systemic circulation. This process ensures that the heart efficiently delivers oxygenated blood to the systemic organs and tissues, while the left ventricle focuses on supplying oxygenated blood to the brain and vital organs.