Question

In humans, right auricle receives______blood from______ a) Oxygenated, aorta b) Deoxygenated, vena cava c) Oxygenated, vena cava d) Deoxygenated, aorta

Answer 1

Answer:

Left auricle

Explanation:

The left atrium or left auricle receives oxygenated blood from the lungs through for opening of pulmonary veins

Answer 2

In humans, the right auricle receives deoxygenated blood from the vena cava.(option - b)

• In mammals, Double circulation is present i.e. 2 cycles of circulation - one is pulmonary circulation and another is systematic blood circulation.
• In humans, the heart is four-chambered.
• Right side of the heart receives deoxygenated blood whereas oxygenated blood flows from the left side of the heart.
• The right auricle receives deoxygenated blood from all parts of the body and the left ventricle pumps blood through the pulmonary artery to the lungs for oxygenation.
• The left auricle receives oxygenated blood from the lungs through the pulmonary vein and the left ventricle pumps blood to all parts of the body through the aorta.