Question

Write about the blood vessels that bring blood to the human heart from where and the blood vessels carrying away blood from heart to where

Answer 1

• the blood from large veins called venacava enters into right atrium(RA). These blood is de-oxygenated blood which comes from lower and upper body parts.

• when the pressure in atrium rises then the blood from right atrium is pumped into right ventricle this is called atrial contraction.

• the right ventricles contract and the de-oxygenated blood flows to the lungs through pulmonary artery.

• oxygen is added to the blood and this oxygenated from lungs enters into left atrium through pulmonary vein.

• pressure in left atrium increases so it contracts and blood is pored into left ventricle.

• when the pressure rises in the left ventricle then the blood is pumped into aorta and transported to all parts of the body.

→i hope this explanation have helped you in any way! and plus this rough diagram for easy understanding.