Question

(i)Name the blood vessel that brings oxygenated blood to the human heart.
(ii)Which chamber of human heart recieves oxygenated blood?
(iii)explain how oxygenated blood from this chamber is sent to all parts of the body .

Answer 1

The vessel is pulmonary vien, the left atrium recieves the oxygenated blood ....the blood enters in left atrium as it relax then it contracts when left ventricle relax so blood moves in left ventricle then it also contract to pump the blood to rest of the body. This is how oxygenated blood is pumped to different parts of the body there r valves which prevent blood from moving back.... hope this can help u

Answer 2

Answer:

(i) Pulmonary veins are the blood vessels which carry oxygenated blood from lungs to the heart. A pair of pulmonary veins carries oxygenated from each lung (right and left) to the left atrium of the heart.

(ii) A human heart is composed of four chambers two upper atria and two lower ventricles. The right atrium accepts deoxygenated blood from all parts of the body through the vena cava vein. The right atrium then empties its blood into the right ventricle.

The left atrium accepts oxygenated blood from lungs through pulmonary veins.

(iii) The left atrium then pours its blood into the left ventricle. The left ventricle pumps this blood (oxygenated) to all parts of the body through the aorta (largest artery).