During ventricular systole:a)Oxygenated blood is pumped into the pulmo...
Due to contraction of the ventricles (ventricular systole), the pressure inside the ventricles rises, that force open the semilunar valves of aorta and pulmonary artery so that the blood enters into these vessels. Oxygenated blood is pumped into the aorta from the left ventricle while deoxygenated blood is pumped into the pulmonary artery from the right ventricle.
View all questions of this test
During ventricular systole:a)Oxygenated blood is pumped into the pulmo...
During ventricular systole, the ventricles of the heart contract, leading to the pumping of blood out of the heart. This process occurs simultaneously in both the left and right ventricles.
The correct answer is option D, which states that oxygenated blood is pumped into the aorta and deoxygenated blood is pumped into the pulmonary artery. Let's understand why this is the correct answer:
**1. Function of the Left Ventricle:**
During ventricular systole, the left ventricle contracts, and its main function is to pump oxygenated blood into the systemic circulation. The left ventricle receives oxygenated blood from the left atrium, which is then pumped into the largest artery of the body, the aorta. From the aorta, the oxygenated blood is distributed to all organs and tissues of the body.
**2. Function of the Right Ventricle:**
Simultaneously, during ventricular systole, the right ventricle contracts to pump deoxygenated blood into the pulmonary circulation. The right ventricle receives deoxygenated blood from the right atrium, which is then pumped into the pulmonary artery. From the pulmonary artery, the deoxygenated blood is transported to the lungs for oxygenation.
**3. Pulmonary Circulation:**
The pulmonary circulation is responsible for the oxygenation of blood. In the lungs, the deoxygenated blood from the right ventricle is exposed to oxygen in the alveoli. This oxygen diffuses into the blood, while carbon dioxide, a waste product, diffuses out of the blood and is exhaled.
**4. Systemic Circulation:**
The systemic circulation involves the distribution of oxygenated blood to all organs and tissues of the body. The aorta, the largest artery, receives the oxygenated blood from the left ventricle and branches out into numerous arteries that supply blood to various body regions. Oxygen and nutrients are delivered to the cells, while waste products are removed from the tissues.
In conclusion, during ventricular systole, the left ventricle pumps oxygenated blood into the aorta for systemic circulation, while the right ventricle pumps deoxygenated blood into the pulmonary artery for oxygenation in the lungs. Therefore, option D is the correct answer.
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.