Cardiovascular System Flashcards
Cardiovascular system is made up of
*heart
*blood vessels
*blood
the cardiopulmonary system is made up of
*trachea
*bronchi
*lungs
how many layers does the heart have
3
epicardium location and function
*located on outer layer of heart
*contains coronary blood vessels which supply blood to heart
*protects the heart and supplies lubricating fluid
myocardium location and function
*middle layer of heart
*contracts to pump blood
endocardium location and functions
*innermost layer of the heart
*Thin inner layer that lines chambers and valves of the heart
right atrium function
receives blood from the vena cava
left atrium function
receives blood from the pulmonary veins
right ventricle function
pumps blood into pulmonary trunk
left ventricle function
pumps blood into the aorta
tricuspid valve location and function
(right AV valve)
*located between right atrium and right ventricle
*prevents back flow into the atrium when ventricle contracts
Pulmonary semilunar valve location and function
*located between the right ventricle and pulmonary artery
*prevents the return of blood into the right ventricle
bicuspid valve location and function
(Left AV valve, mitril valve)
*located between the left atrium and left ventricle
*prevents blood from entering the left atrium when the ventricles contract
aortic semilunar valve location and function
*located between the left ventricle and aorta
*stops back flow of blood into the left ventricle as it leaves through the aorta
what is the path of blood through the heart
*in through superior and inferior vena cava
*into the right atrium
*through the tricuspid valve
*into the left ventricle
*through pulmonary valve
*into pulmonary artery
*into lungs
*through pulmonary vein
*into left atrium
*through mitral valve
*into left ventricle
*through aortic valve
*into aorta
*to parts of organs and tissues that need it most
veins carry blood
into the heart
arteries carry blood
away from the heart
what are the major veins that bring blood into the heart
superior and inferior vena cava
what is valve regurgitation
when heart has leaky valves and has to work harder to pump the same amount of blood
heart characteristics
*muscle
*sits in upper left side of chest
*sits behind the rib cage
*about the same size as clenched fist
*made up of chambers and valves
*beats about 100,000 times a day
what are the major veins
*jugular
*left and right subclavian
*hepatic
*renal
*common iliac
veins become
venules
major arteries
*right and left pulmonary
*aorta
*subclavian
*carotid
*renal
*femoral
*common iliac
coronary artery function
wrap around heart and supply blood to heart muscles
*left and right coronary arteries
arteries become
arterioles
capillaries are made up of
arterioles and venules
pulmonary circulation function
blood moves between the heart and lungs
systemic circulation function
blood. moves between heart and rest of body