Chapter 4: Doppler Imaging Artifacts Flashcards
the study of blood flow through the blood vessels of the body
hemodynamics
difference in fluid energy
energy gradient
No energy gradient =
no flow
the driving force of the blood through the blood vessels
pressure energy
Potential energy converts into _______
kinetic energy
gravitational potentional energy
hydrostatic pressure
describes relationship between gravity, the density of blood, and the distance between an arbitrary reference point (usually the heart)
hydrostatic pressure
form of energy loss; produced when kinetic energy is converted to heat as a result of friction
viscous energy
an object at rest stays at rest, and an object in motion stays in motion unless acted on by an outside first
inertia
total energy in a system never changes; there must be the same total energy at the end of a vessel as at the beginning; types of energy may be different between two points
the law of conservation of energy
kinetic energy + heat energy =
potential energy that was initially found at beginning of vessel
the volume of blood moving through a vessel per unit time
flow
The amount of f low in a blood vessel is ______ proportional to pressure gradient.
directly
systemic circulation
left ventricle of heart
aorta
arteries
arterioles
capillaries
venules
veins
IVC
right atrium of heart
where nutrient and waste exchange occurs
capillaries
vessels responsible for vasoconstriction and vasodilatation in th ebody
arterioles
venous part of systemic circulation
forits capacitance
Approximately ____ of the blood is stored in the veins
2/3
3 layers of vessels
tunica intima
tunica media
tunica adventitia
inner layer of blood vessel
tunica intima
blood vessel layer made of muscle and elastic tissue; arteries have a thicker layer
tunica media
outer layer of blood vessel
tunica adventitia
The _______ supplies the tunica adventitia with its own blood supply.
vasa vasorum
found in large blood vessels at the entrance
plug flow