circulatory system Flashcards
in system circulation blood travels from the
heart to the rest of the body and back to the heart
in pulmonary circulation blood travels from
the heart to the lungs and back to the heart
Arteries (high pressure)
carry blood AWAY from the heart
aorta (highest pressure in the body)
major vessel that blood travels to the body from the heart
Arterioles
small Arteries
capillaries
microscopic vessels where blood leaves the vessels to get to the organs
capillaries are formed when….
oxygenated and deoxygenated blood mix
Venules
small Veins
veINs (low pressure)
carry blood back INto the heart
veins push blood back to the heart by….
skeletal muscle contractions and pressure from the heart
atria (low pressure)
receiving chambers
right atrium
receives blood from the body (deoxygenated/poor)
left atrium
receives blood from lungs (oxygenated/rich)
ventricles (high pressure)
pumping chambers
right ventricle
pumps blood to lungs
left ventricles
pumps blood to aorta to the rest of the body
pericardium
outer covering of the heart
pericardial fluid
fluid inside the pericardium that reduces friction
Epicardium
External layer of the heart
Myocardium (bulk of the heart)
cardiac Muscle tissue
endocardium
lining of the inside of the heart
AtrioVentricular valves (AV)
valves between the Atrium and Ventricle
semilunar valves
valves at the aorta preventing blood from reentering the left ventricle
blood groups (ABO)
based on antigens A and B located on the outside of the blood cell
