Cardiovascular System Flashcards
Cardiovascular System
heart and the blood vessels work together to move blood throughout the body
heart and the blood vessels work together to move blood throughout the body
Cardiovascular System
Three Types of Blood Vessels
Arteries, Veins, & Capillaries
Arteries, Veins, & Capillaries
Three Types of Blood Vessels
Arteries
carry oxygenated blood away from the heart. These vessels get smaller and turn into arterioles as they go into the extremities
carry oxygenated blood away from the heart. These vessels get smaller and turn into arterioles as they go into the extremities
Arteries
Veins
carry deoxygenated blood back to the heart. The venous side of the circulation begins in the venous side of the capillary bed, enlarging to form venules and eventually forming veins and returning the blood to the heart. The left ventricle has a muscle mass that is much greater than any other chamber in the heart
carry deoxygenated blood back to the heart. The venous side of the circulation begins in the venous side of the capillary bed, enlarging to form venules and eventually forming veins and returning the blood to the heart. The left ventricle has a muscle mass that is much greater than any other chamber in the heart
Veins
Capillaries
tiny vessels, usually a single cell layer thick. They are semi-permeable and facilitate the exchange of fluids, oxygen, nutrients, and waste between local tissues and the blood stream
tiny vessels, usually a single cell layer thick. They are semi-permeable and facilitate the exchange of fluids, oxygen, nutrients, and waste between local tissues and the blood stream
Capillaries
Three Layers of Heart
Epicardium, Myocardium, Endocardium
Epicardium, Myocardium, Endocardium
Three Layers of Heart
Epicardium
outer layer of the heart
outer layer of the heart
Epicardium
Myocardium
main muscle of the heart
main muscle of the heart
Myocardium
Endocardium
inner lining of the heart
inner lining of the heart
Endocardium
Myocardial Tissues
allow electrical impulses to pass quickly across the muscle fibers as part of the heart’s unique electrical conduction system
allow electrical impulses to pass quickly across the muscle fibers as part of the heart’s unique electrical conduction system
Myocardial Tissues
Pericardial Sac
double-walled lining that encloses the heart which prevents the heart from rubbing against other organs or body structures as it beats
double-walled lining that encloses the heart which prevents the heart from rubbing against other organs or body structures as it beats
Pericardial Sac
