Washington Esthetician State Board Practice Exam

Which chambers of the heart are described as thick-walled and lower?

1. Atria

2. Ventricles

3. Septum

4. Aortic

The correct answer is: Ventricles

The ventricles are described as thick-walled and lower chambers of the heart because they are responsible for pumping blood out of the heart to the lungs and the rest of the body. The left ventricle, in particular, has the thickest walls as it needs to generate high pressure to send oxygenated blood throughout the entire body. The muscular design of the ventricles is crucial for their function in effectively managing blood circulation. In contrast, the atria are the upper chambers of the heart and have thinner walls since their primary role is to receive blood returning to the heart. The septum is a wall that divides the left and right sides of the heart, and the aorta is a major artery that carries blood away from the heart. Thus, the distinguishing characteristics of the ventricles, particularly their thickness and position in the heart's anatomy, identify them as the lower chambers.