Parts of the Heart:
Auricles and ventricles: The heart is divided into four parts called chambers. The upper chambers are called auricle while the lower chambers are called ventricles. On the left side of the heart are found left auricle and left ventricle while on the right side of the heart are found right auricle and right ventricle.
Auricles: Auricles pump blood to the ventricles, which in turn pumps the blood to all parts of the body. They therefore must have thick walls to provide the extra force needed.
Structure and Functions of Auricles and Ventricles
Auricles:
The walls of the auricles are thinner
Auricles pump blood to the ventricles.
The left auricle gets oxygenated blood from the body while the right auricle receives deoxygenated blood from the body.
Ventricles:
They are larger than the auricles and have strong muscular walls.
Blood to the lungs is pumped by the right ventricle and the left ventricle pumps the blood to all parts or the pump body. Thicker walls of the left ventricle help to pump blood longer distance while right ventricle pumps to a shorter distance i.e. to the lungs.
Blood Vessels of the Heart The main blood vessels in the heart include: Pulmonary artery, Pulmonary veins, Vena cava and Aorta
Main blood vessels of the heart and functions
Pulmonary artery:
Pulmonary artery carries deoxygenated blood from the right ventricle to the lungs.
Pulmonary vein:
Pulmonary vein carries blood oxygenated blood from the lungs to the left auricle.
Vena cava:
This is the main vein in the body which carries deoxygenated blood from all parts of the body to the heart.
Aorta:
Aorta is the main artery in the body. It carries oxygenated blood from the left ventricle to all parts of the body
Valves:
The work of the valves in the heart is to prevent back flow of the blood. They ensure that the blood goes from the heart only through the pulmonary artery and does not come back through the pulmonary vein.
raphael answered the question on
October 7, 2018 at 11:35