Q What is the nearest structure to the atrioventricular node?
Question Info
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Explanation
The atrioventricular (AV) node is a small component of the heart located in the lower-left corner of the right atrium. It is responsible for transmitting electrical signals to the ventricles, causing them to contract and pump blood out of the heart. The atrioventricular septum is a wall of tissue that separates the atria and ventricles of the heart, and is located near the AV node. Therefore, the correct answer is option C. The sinoatrial node (SAN) is located in the upper-right corner of the right atrium and is responsible for generating the electrical impulses that regulate the heart's rhythm. The left ventricle is one of the four chambers of the heart and is responsible for pumping oxygenated blood to the body. The aorta is the largest artery in the body and is responsible for carrying oxygenated blood away from the heart to the rest of the body.
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