Anatomy/Physiology Review Flashcards
Pericardium
Fibrous protective sac enclosing the heart
Epicardium
Myocardium
heart muscle, the major portion of the heart
Endocardium
smooth lining o the inner surface and cavities of the heart
Right Atrium
receives blood from systemic circulation, from the superior vena cavae (SVC) and inferior vena cava (IVC).
Right ventricle
receives blood from the RA and pumps blood via the pulmonary artery to the lungs for oxygenation; the low-pressure pulmonary pump
Left atrium
receives oxygenated blood from the lungs and the four pulmonary veins.
Left Ventricle
Receives blood from the LA and pumps blood via the aorta throughout the entire systemic pump. The walls of the LV are thicker and stronger than the R ventricle and form most of the L side and apex of the heart.
Valves are ___-way flow of blood
one-way
Atrioventricular valves
prevent backflow of blood into atria during ventricular systole; anchored by chordae tendineae to papillary muscles; valves close when ventricular walls contract.
What are the names of the right heart valve?
Tricuspid
What are the names of the left heart valve?
Bicuspid valve
Mitral valve
Semilunar valves
prevent backflow of blood from aorta and pulmonary arteries into the ventricles during diastole
Pulmonary valve prevents ____ backflow while aortic valve prevents _____backflow.
Pulm - right
Aortic - left
Systole
the period of ventricular contraction. End systolic volume is the amount of blood in the ventricles after systole, about 50 mL
