Backwards heart Human heart has 4 chambers Two upper chambers are called atria (plural) or atrium (singular)
Deoxygenated Blood Blood that has very little oxygen in it. This blood has been pumped out to the body and given the oxygen to the cells. BLUE This blood has just come from the lungs, where it picked up oxygen. It is pumped out to the body, full of oxygen. RED Oxygenated Blood
Small sacs where gas exchange takes place. Each alveoli is wrapped in capillaries.
Right Atrium receives deoxygenated blood. It is low in oxygen and high in carbon dioxide.
Superior Vena Cava Brings oxygen low blood from the upper body to the heart. From the head From the arms Brings oxygen low blood from the lower parts of the body to the heart. Legs Internal organs Inferior Vena Cava
Receives blood from the lungs. It is high in oxygen and ready to be pumped out to the body.
Receives oxygen rich blood from the lungs through the: Anyone know another word for the lungs? Pulmonary Vein
Receives blood from the right atrium. Pumps oxygen poor blood to the lungs.
Receives blood from the left atrium. Pumps oxygen rich blood to all parts of the body.
Thick, muscular wall that separates the two sides of the heart. Prevents oxygen rich blood from mixing with oxygen poor blood.
The oxygen low blood leaves the heart to go to the lungs to pick up oxygen. Leaves the heart through the: Pulmonary Artery
Leaves the heart through one artery. Largest artery in the body. Aorta
Valves allow blood to move through, but do not allow it to move backwards. The heart has four valves.
The valve that allows blood into the aorta. Aortic Valve
Valve that allows blood into the Pulmonary Artery. Pulmonary Valve
Valve that allows blood to travel from the right atrium to the right ventricle. Tricuspid Valve
Valve that allows blood to travel from the left atrium to the left ventricle. Mitral Valve