cardiovascular system overview Flashcards
substances entering the body
oxygen, nutrients and water
a transport system that carries blood to and from the tissues of the body
cardiovascular system
what structure ensures that blood only moves one direction in the system
valves
what side of the heart only pumps blood systemically
left side
vein and artery valves prevent back flow of blood (T/F)
false (only veins have valves)
what structure separates the left and right side of the heart
E septum
what structure separates the right atria from the left ventricle
tricuspid valve
what structure separates the left atria from the left ventricle
mitral valve (aka bicuspid)
The left tube will have less pressure maintaining its volume then the tubes closer to the flowing opening in the system (T/F)
false
If the radius of A changes to 3, the flow through A will be about ____ times the flow through B
5
All 4 tubes have the same driving pressure. Which tube has the greatest flow?
Shorter, larger diameter tube
All 4 tubes have the same driving pressure. Which tube has the least flow?
long, small diameter tube
if an artery is partially blocked, the resistance to blood flow in that artery decreases (T/F)
false - would increase
if there is blockage and the flow through the artery doesn’t change, the velocity of flow will increase (T/F)
true - artery is blocked and flow is maintained so velocity will increase because blood will move faster
Possible causes of turbulent flow in blood vessels
clot, stenosis
what vessels are commonly involved in a myocardial infarction
coronary artery
blood is pumped into the circulatory when the ??? contracts
ventricles
which ventricle specifically pumps blood into the pulmonary circulation
right
occurs if the flaps of a valve thickens, stiffener fuse together= not enough blood flows through the valve
stenosis
2 major causes of stenosis
congenital and atherosclerosis (build of calcium)
Heart valve disease treatment
lifestyle change, medications, surgery
what structure of the heart has the lowest pressure
vena cava
the base of the heart is localized at the top of the organ because of orienting movement of tissue during embryologic development (T/F)
true
