MOCK TEST #5 CCI RCS || 100% Verified Answers.
the study of blood moving through the circulatory system correct answers hemodynamics
indicates the volume of blood moving during a particular time correct answers flow (also called
volume flow rate)
units for flow correct answers L/min
indicates the speed of a fluid moving from one location to another correct answers velocity
units for velocity correct answers cm/s
3 basic forms of blood flow correct answers 1. pulsatile
2. phasic
3. steady
occurs when blood moves with a variable velocity due to cardiac contraction, and appears in
arterial circulation correct answers pulsatile flow
occurs when blood moves with a variable velocity due to respiration, and appears in venous
circulation correct answers phasic flow
occurs when a fluid moves at a constant speed or velocity correct answers steady flow
flow that occurs when the flow streamlines are aligned and parallel correct answers laminar
when are laminar flow patterns found? correct answers normal physiological states
2 forms of laminar flow correct answers plug flow- occurs when all of the layers and blood cells
travel at the same velocity
parabolic- bullet-shaped profile where the velocity is highest in the center of the lumen
number that predicts whether flow is laminar or turbulent correct answers Reynolds number
What is the Reynolds number for laminar flow? correct answers less than 1500
flow characterized by chaotic flow patterns in many different directions and speeds correct
answers turbulent flow
when is turbulence commonly observed? correct answers cardiovascular *pathology* and
elevated blood velocities
turbulent flow profiles may be seen downstream from a significant _______ in a vessel correct
answers stenosis
, sounds that are associated with turbulent flow correct answers murmur/bruit
tissue vibration associated with turbulence correct answers thrill
what is the Reynolds number for turbulent flow? correct answers greater than 2000
Term for blood that is moving from regions of *higher* energy to *lower* energy. correct
answers energy gradient
energy forms that are associated with blood correct answers 1. kinetic
2. pressure
3. gravitational
the total energy at a specific location within the circulation is the _____ of all three energy forms
correct answers sum
energy that is associated with a moving object correct answers kinetic
2 factors for kinetic energy correct answers 1. mass of object
2. the speed at which it moves
form of energy that is stored correct answers pressure energy (aka potential energy)
form of energy that is stored- and is elevated correct answers gravitational
thickness of a fluid correct answers viscosity
the tendency of a fluid to resist changes in its velocity is related to correct answers inertia
narrowing in the lumen of a vessel correct answers stenosis
downstream turbulence that results from stenosis correct answers post-stenotic turbulence
the relationship between velocity and pressure in a moving fluid correct answers Bernoulli's
Principle
velocity of blood is highest at the _______ part of the vessel correct answers narrowest
formula for pressure gradient correct answers pressure gradient= flow x resistance
what are the resistance vessels in the circulatory system called? correct answers arterioles
formula for voltage correct answers voltage= current x resistance
pressure related to the weight of blood pressing on a vessel measured at a height above or below
heart level correct answers hydrostatic pressure
the study of blood moving through the circulatory system correct answers hemodynamics
indicates the volume of blood moving during a particular time correct answers flow (also called
volume flow rate)
units for flow correct answers L/min
indicates the speed of a fluid moving from one location to another correct answers velocity
units for velocity correct answers cm/s
3 basic forms of blood flow correct answers 1. pulsatile
2. phasic
3. steady
occurs when blood moves with a variable velocity due to cardiac contraction, and appears in
arterial circulation correct answers pulsatile flow
occurs when blood moves with a variable velocity due to respiration, and appears in venous
circulation correct answers phasic flow
occurs when a fluid moves at a constant speed or velocity correct answers steady flow
flow that occurs when the flow streamlines are aligned and parallel correct answers laminar
when are laminar flow patterns found? correct answers normal physiological states
2 forms of laminar flow correct answers plug flow- occurs when all of the layers and blood cells
travel at the same velocity
parabolic- bullet-shaped profile where the velocity is highest in the center of the lumen
number that predicts whether flow is laminar or turbulent correct answers Reynolds number
What is the Reynolds number for laminar flow? correct answers less than 1500
flow characterized by chaotic flow patterns in many different directions and speeds correct
answers turbulent flow
when is turbulence commonly observed? correct answers cardiovascular *pathology* and
elevated blood velocities
turbulent flow profiles may be seen downstream from a significant _______ in a vessel correct
answers stenosis
, sounds that are associated with turbulent flow correct answers murmur/bruit
tissue vibration associated with turbulence correct answers thrill
what is the Reynolds number for turbulent flow? correct answers greater than 2000
Term for blood that is moving from regions of *higher* energy to *lower* energy. correct
answers energy gradient
energy forms that are associated with blood correct answers 1. kinetic
2. pressure
3. gravitational
the total energy at a specific location within the circulation is the _____ of all three energy forms
correct answers sum
energy that is associated with a moving object correct answers kinetic
2 factors for kinetic energy correct answers 1. mass of object
2. the speed at which it moves
form of energy that is stored correct answers pressure energy (aka potential energy)
form of energy that is stored- and is elevated correct answers gravitational
thickness of a fluid correct answers viscosity
the tendency of a fluid to resist changes in its velocity is related to correct answers inertia
narrowing in the lumen of a vessel correct answers stenosis
downstream turbulence that results from stenosis correct answers post-stenotic turbulence
the relationship between velocity and pressure in a moving fluid correct answers Bernoulli's
Principle
velocity of blood is highest at the _______ part of the vessel correct answers narrowest
formula for pressure gradient correct answers pressure gradient= flow x resistance
what are the resistance vessels in the circulatory system called? correct answers arterioles
formula for voltage correct answers voltage= current x resistance
pressure related to the weight of blood pressing on a vessel measured at a height above or below
heart level correct answers hydrostatic pressure
