The given question is about the circulation of blood in the human body and which statements are correct regarding it. Let`s dissect each option to understand them better.
Option 1: It states that statement 1 and 2 are correct.
Statement 1: It implies that the oxygenated blood is brought to the heart by pulmonary arteries. This statement is incorrect. Pulmonary arteries actually carry deoxygenated blood from the heart to the lungs.
Statement 2: It states that the oxygenated blood from the lungs directly enters the left ventricle of the heart. This statement is incorrect. Oxygenated blood from the lungs enters the left atrium of the heart, not directly the left ventricle.
Option 2: It states that statement 1 and 3 are correct.
Statement 1: Already discussed above. This statement is incorrect.
Statement 3: It states that impure or deoxygenated blood from the tissues enters the right atrium of the heart. This statement is correct. Deoxygenated blood returns to the heart through the superior and inferior vena cava, entering the right atrium.
Option 3: It states that statement 2 only is correct.
Statement 2: Already discussed above. This statement is incorrect.
Option