Aorta - the body's largest artery; the blood vessel that carries blood out of the heart's left ventricle
Superior vena cava - The vein that carries blood from the upper body into the right atrium
Inferior vena cava - The vein that carries blood from the lower body into the right atrium
Pulmonary artery - Artery that carries blood from the right ventricle into the lungs. Upon exiting the heart, it immediately divides into the left pulmonary artery and the right pulmonary artery
Pulmonary veins - veins that carry freshly oxygenated blood from the lungs into the left atrium
Atria - one of two low-pressure and thin-walled chambers of the heart. The right atrium is the entry point of the heart for deoxygenated blood that has traveled straight through the body; the left atrium is the entry point for blood that has been oxygenated in the lungs.
Interatrial Septum - connective tissue that forms the wall in the middle of the left and right atria
Atrial kick - the occurrence of extra blood flowing into the ventricles as a follow of the contraction of the atria
Coronary arteries - the arteries that supply blood to the heart itself
Tricuspid atrioventricular valve - the valve in the middle of the right atrium and the right ventricle which prevents blood from flowing back to the right atrium once it has entered the right ventricle
Mitral (bicuspid) atrioventricular valve - the valve in the middle of the left atrium and left ventricle which prevents blood from flowing back into the left atrium once it has entered the left ventricle
Pulmonic semilunar valve - the valve in the middle of the right ventricle and the pulmonary artery which prevents blood from flowing back to the right ventricle once it has entered the pulmonary artery
Aortic semilunar valve - the valve in the middle of the left ventricle and the aorta which prevents blood from flowing back into the left ventricle once it has entered the aorta
Interventricular septum - connective tissue that separates the right and left ventricles
Ventricles - the lower, high-pressure, thick-walled chambers of the heart. The right ventricle receives blood from the right atrium and pumps it into the pulmonary artery. The left ventricle receives blood from the left atrium and pumps it ito the aorta.
Myocardium - the heart muscle. It is made up of muscle fibers, capillaries and nerve cells. The term can also refer to the heart itself.
Endocardium - the inside layer of the heart muscle
Epicardium-the outer layer of the heart muscle
Pericardium - the double walled sac that surrounds the heart
Subendocardial area - the innermost half of the myocardium
Subepicardial area - the outermost half of the myocardium
Visceral layer of the serous pericardium - other name for the epicardium
Fibrous parietal pericardium - the outer layer of the pericardium
Serous pericardium - the inner layer of the pericardium
4300 gallons - approximate number of blood that is pumped by the heart each day
150 mL - approximate volume of blood that each ventricle can hold
Cardiac cycle - refers to one complete cycle of pumping by the heart
Systole - period of contraction when blood is being ejected from a chamber. There is both atrial systole and ventricular systole. When the prefix is not supplied, however, ventricular systole is the assumed meaning
Asystole - when the period of contraction does not occur
Diastole - the period of free time during which the chambers are allowed to fill with blood due to the pressure differences inside the chambers.. There is both atrial diastole and ventricular diastole. When the prefix is not supplied, however, ventricular diastole is the assumed meaning
No comments:
Post a Comment