coronary circulation Flashcards
what do the Right and left coronary
arteries do
nourish the myocardium
what do the left and right cardiac
veins remove waste from
from the myocardium
how does blood travel from coronary arteries
-Blood travels from coronary
arteries to capillary beds in
the myocardium
-Blood then flows
into cardiac veins that
empty into the coronary sinus
and right artium
what is coronary circulation
delivery of oxygenated blood to heart muscle and the return of deoxygenated blood to venous system
what is Coronary Artery Disease (CAD) –
an obstruction of
the heart’s arteries caused by atherosclerosis
what is Angina pectoris
chest pain when myocardium
is deprived of adequate oxygen
what is Myocardial infarction and how can you recover
Heart tissue death due to oxygen loss caused by a coronary blood clot.
What do coronary arteries do?
Supply blood to the myocardium.
What happens if a coronary artery is blocked?
myocardium can die
: How does the body adapt to blocked arteries?
Collateral arteries open to supply blood.
What are collateral arteries?
A: Backup arteries that open during a blockage.
What is a self-bypass?
Collateral arteries restoring blood flow.
What are treatments for coronary artery diseases?
• medicines
• angioplasty (w or w/o stenting)
• coronary artery by-pass surgery
• transmyocardial laser
revascularization (TML)
what is the diastole phase of cardiac cycle and time it last
Atria contracts, blood is pumped into ventricles (relaxed)
Time – 0.5 seconds
what is the systole phase of the cardiac cycle
Ventricles contract, blood is pumped to the lungs and rest of body (systemic circulation)
Time – 0.3 secon
