Question

Which of the following sequence is truly a systemic circulation pathway?

• A. Right ventricle $\to$ Pulmonary aorta $\to$ Tissues $\to$ Pulmonary veins $\to$ Left auricle
• B. Right auricle $\to$ Left ventricle $\to$ Aorta $\to$ Tissues $\to$ Veins $\to$ Right auricle
• C. Left auricle $\to$ Left ventricle $\to$ Pulmonary Aorta $\to$ Tissues $\to$ Right auricle
• D. Left auricle $\to$ Left ventricle $\to$ Aorta $\to$ Arteries$\to$ Tissues $\to$ Veins $\to$ Right auricle

Answer 1

Answer: (D)

Left auricle $\to$ Left ventricle $\to$ Aorta $\to$ Arteries$\to$ Tissues $\to$ Veins $\to$ Right auricle

Systemic circulation is the largest circulatory route. It takes oxygenated blood from the left ventricle through the aorta to all parts of the body, including some lung tissue (not air sac or alveolus) and returns the deoxygenated blood to the right atrium, through the systemic veins; the superior vena cava, the inferior vena cava, and the coronary sinus.

It has several subdivisions. Two of the several subdivisions are the coronary circulation and the hepatic portal system or circulation.

So, the correct answer is option D.