Deoxygenated blood first enters the heart through the right atrium.
The first beat is to push the blood out and the second is to get the blood back into the heart.
Blood from the body is first received by the heart in the right atrium. The blood is taken to the right ventricle and eventually to the lungs to be purified and oxygenated.
Blood first leaves the heart of a fish and enters the gills for oxygenation. From the gills, oxygenated blood is transported to the rest of the fish's body through arteries.
this is two step process.in the first process blood go from the heart and in the second step blood come into the heart for clean. when it goes from the heart it is cleaned blood,but when it returns it become dirty and our heart performs as a filter and it cleans our blood. this is the chemistry of blood, hopefully you would like it.
As blood leaves the heart it travels through the arteries. The first one will be either the pulmonary artery (for blood leaving the right side of the heart) or the aorta (for blood leaving the left side of the heart).
Blood from the body is first received by the heart in right artery. This blood is then pumped into the lungs so that it can get oxygen before being distributed to the rest of the body.
heart
In the pulmonary circulation, deoxygenated blood leaves the right section of the heart through the pulmonary artery, enters the lungs and oxygenated blood comes through the pulmonary veins. The blood then moves to the left atrium of the heart.
It originates there. First you breathe in and you add oxygen to you blood streams, by the way of capillaries. It then circulates from the heart to every where else.
all arteries except the pulmonary artery carry blood away from the heart
The first organ to receive oxygen-rich blood would be the heart. The right ventricle pumps de-oxygenated blood to the lungs. The lungs provide oxygen via interaction with capillaries which in turn sends the oxygen-rich blood back to the left atrium which is found in the heart.
The left atrium is the chamber that receives oxygenated blood returning from the lungs.