Pulmonary vs Systemic Circulation — NEET Biology
📚 Practice ConceptAs mentioned earlier, the blood pumped by the right ventricle enters the pulmonary artery, whereas the left ventricle pumps blood into the aorta. The deoxygenated blood pumped into the pulmonary artery is passed on to the lungs from where the oxygenated blood is carried by the pulmonary veins into the left atrium. This pathway constitutes the pulmonary circulation. The oxygenated blood entering the aorta is carried by a network of arteries, arterioles and capillaries to the tissues from where the deoxygenated blood is collected by a system of venules, veins and vena cava and emptied into the right atrium. This is the systemic circulation. The systemic circulation provides nutrients, O₂ and other essential substances to the tissues and takes CO₂ and other harmful substances away for elimination. A unique vascular connection exists between the digestive tract and liver called
Arrange the following structures in the correct sequence for double circulation and assign 1 = deoxygenated, 2 = oxygenated next to each: Structures: A. Left Ventricle B. Pulmonary Veins C. Right Atrium D. Aorta E. Lungs F. Right Ventricle G. Left Atrium H. Pulmonary Artery
View solution & NCERT explanation
Correct answer: C — C(1) → F(1) → H(1) → E → B(2) → G(2) → A(2) → D(2)
Right Atrium (C, 1): Deoxygenated blood from the body enters the right atrium through the venae cavae. Right Ventricle (F, 1): From the right atrium, blood moves to the right ventricle, still deoxygenated. Pulmonary Artery (H, 1): Right ventricle pumps deoxygenated blood into the pulmonary artery. Lungs (E): Gas exchange occurs; blood becomes oxygenated. Pulmonary Veins (B, 2): Oxygenated blood returns to the left atrium via pulmonary veins. Left Atrium (G, 2): Receives oxygenated blood from lungs. Left Ventricle (A, 2): Pumps oxygenated blood with strong force. Aorta (D, 2): Distributes oxygenated blood throughout the body. Thus, pulmonary circulation (RA → RV → Pulmonary artery → Lungs → Pulmonary veins → LA) is followed by systemic circulation (LV → Aorta → Body → Venae cavae → RA).
What does NCERT say about As mentioned earlier blood?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.