IT IS ESSENTIAL FOR PUMPING BLOOD THROUGHOUT THE BODY WITHOUT IT WE WOULD NOT GET THE OXYGEN WE NEED TO SURVIVE
LOCATION OF THE HEART Left of the midline posterior to sternum in the mediastinum
The heart consists of four chambers
Looks like a lot to learn.
Right atrium The right atrium receives blood from the Superior and Inferior Vena Cava, this is deoxygenated blood The blood flows from there into the left ventricle through the tricuspid valve. Valves are important they keep blood from flowing back into the heart
Blood in the left ventricle is still deoxygenated
Blood from the left ventricle is pushed out of the heart into the pulmonary artery where it is transported to the lungs
There is a valve between the pulmonary artery and the left ventricle-pulmonary valve
In the lungs oxygen is received into the blood
Follow the arrows to see how blood flows through the heart.
After the blood has oxygen, it is returned to the heart through the pulmonary veins into the right atrium.
In right atrium blood is pushed into the right ventricle through the bicuspid valve.
A closer look at the valves
The right ventricle receives oxygenated blood from the right atrium
From here blood is pushed out to the body through the aorta.
Cardiac muscle tissue
LAYERS OF THE HEART Epicardium: outermost layer of the heart Myocardium: is the heart muscle Endocardium: innermost layer made up of simple squamous epithelium