calderonhailey cardiovascular (disorders (congestive heart failure: a…
anatomy of the heart
layers of the heart
the heart is divided into three layers
myocardium: muscular middle layer wall of the heart
endocardium: inner layer of the heart.
epicardium: outer protective layer of the heart.
2) the right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve.
3) the left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve.
1) the right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle through the tricuspid valve.
4) the left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
major arteries and veins
aorta: the main artery of the body, supplying oxygenated blood to the circulatory system, it passes over the heart from the left ventricle and runs down in front of the backbone.
pulmonary artery: the artery carrying blood from the right ventricle of the heart to the lungs for oxygenation.
superior vena cava: a large vein carrying deoxygenated blood into the heart, carrying blood from the head, arms, and upper body
inferior vena cava: a large vein carrying deoxygenated blood into the heart, carrying blood from the lower body
pulmonary vein: a vein carrying oxygenated blood from the lungs to the left atrium of the heart.
cardiac cycle and ECG
the cardiac cycle is split into two phases
systole: The time period when the heart is contracting. The period specifically during which the left ventricle of the heart contracts.
diastole: the minimum arterial pressure during relaxation and dilatation of the ventricles of the heart. Diastole is the time when the ventricles fill with blood
ECG: a noninvasive procedure, a recording of the electrical activity of the heart.
congestive heart failure: a chronic condition in which the heart does not pump blood as well a it should.
cardiac arrest: sudden, unexpected loss of heart function, breathing, and consciousness
high blood pressure: a condition in which the force of the blood against the artery walls is too high.
coronary artery disease: damage or disease in the hearts major blood vessels,
structural and functional differences