it will take a babys heart 40 days or 6 weeks to develop it will go through a phase called looping. Then when the baby is born after its first breath the valves in vetro are closed and the ones used in life open. Since the baby is using its owns lungs now. The last valve should close about a week after birth, leaving the 4 other valves open.
Really early on one of the first things that is formed is the beginnings of its heart and circulatory system. Once it starts pumping the blood starts flowing.
its the heart
Blood is pumped by the heart.
it pumps blood around the body. if the human heart stops it means your dead
The human heart is in the chest cavity.
The apex of the heart points towards the left side of the chest in the human body.
The human heart.
The heart is an organ of the human body responsible for pumping blood and supplying oxygen and nutrients to the rest of the body.
When your heart beat's it push's the blood around the human body.
the heart pumps blood around the human body
the shape of the heart is like a cone
The Heart!!!
heart