MIDTERM Flashcards
(116 cards)
which of the following represents potential energy?
the “snap” of the mouse trap
the road runner hanging off the cliff, but not yet falling
the road runner falling off the cliff
the road runner hanging off the cliff, but not yet falling
Now try to relate some of this energy talk to blood flow throughout the body. Predict what impact gravitational energy might have on blood flow within the body.
Gravitational energy might impact blood flow because when the patient is standing or lying down the gravitational forces on the blood within the blood vessels will be different.
If a patient is jumping off a cliff, the pressures in the walls of his vessels might result in atherosclerosis
Gravitational energy might impact blood flow because when the patient is standing or lying down the gravitational forces on the blood within the blood vessels will be different.
which of the following represents gravitational energy?
the “snap” of the mouse trap
the road runner hanging off the cliff, but not yet falling
the road runner falling off the cliff
the road runner falling off the cliff
which of the following represents kinetic energy?
the spring being compressed
the spring expanding forward
the spring expanding forward
Which of the following characteristics of blood do diabetics, smokers, hypertensives, post-menopausal women, and most middle age men, all have in common?
elevated cholesterol
missing clotting factor
low hematocrit
high viscosity
high viscosity
What is the stated difference between blood of men and the blood of pre-menopausal women?
men have thinner blood than women
pre-menopausal women have a lower blood viscosity than men
post-menopausal women have a lower blood viscosity than men
men have higher blood viscosity than post-menopausal women
pre-menopausal women have a lower blood viscosity than men
What is the stated difference between blood of diabetics and non-diabetics?
diabetes results in higher blood viscosity
diabetes results in lower blood viscosity
not having diabetes raises your risk factors for heart disease
having diabetes lowers your risk of having heart disease
diabetes results in higher blood viscosity
What is the stated difference between blood of hypertensive individuals and those with normal blood pressure?
The individual with normal blood pressure will have higher levels of blood viscosity and be at lower risk for cardiovascular disease.
The individual with normal blood pressure will have lower levels of blood viscosity and be at higher risk for cardiovascular disease.
The individual that is hypertensive will have lower levels of blood viscosity and a higher risk for cardiovascular disease.
The individual that is hypertensive will have higher levels of blood viscosity and a higher risk for cardiovascular disease.
The individual that is hypertensive will have higher levels of blood viscosity and a higher risk for cardiovascular disease.
How does the video describe the impact of smoking on the patient’s blood and cardiovascular disease?
Smokers have thin blood and are at greater risk for CVS disease.
Smokers have thicker blood and are at greater risk for CVS disease.
Non-smokers have thinner blood and are at greater risk for CVS disease.
Non-smokers have thicker blood and are at lower risk for CVS disease.
Smokers have thicker blood and are at greater risk for CVS disease.
Predict why higher viscosity of blood might result in increased risk for cardiovascular disease in all of these situations?
The higher the blood viscosity, the slower it moves, the more likely it is to cause hemodynamic disturbances that affect the vessel walls, result in plaque formation, vessel wall hardening, etc.
The higher the blood viscosity, the thinner the blood so it moves faster, resulting in more turbulence that weakens blood vessel walls.
The higher the blood viscosity, the thinner the blood so it cannot clot and this affects the flow of nutrients to the cells which weakens the vessel walls.
The higher the blood viscosity, the thicker the blood so the blood cells do not fit through the small openings of the aorta and the heart chambers and valves.
The higher the blood viscosity, the slower it moves, the more likely it is to cause hemodynamic disturbances that affect the vessel walls, result in plaque formation, vessel wall hardening, etc.
Which of the following definitions, best describes the term “hemodynamics”?
study of the anatomy of the heart and blood vessels
study of blood vessels and how they interact at the cellular level
study of blood components
study of blood moving through the circulatory system
study of blood moving through the circulatory system
All of the following would be considered part of the Four Pumps that assist blood flow throughout the body EXCEPT:
heart pump
vertebral pump
aortic pump
calf muscle pump
respiratory pump
vertebral pump
When discussing or measuring “flow”, AKA “volume flow rate”, one would most likely be measuring what and using which units of measure?
discussing the number of blood cells passing through a vessel wall and using a concrete number such as 320
discussing the amount of blood flow and using a volume unit such as liter
discussing the amount of blood flow over a specified period of time and using a volume unit such as liter divided by a unit of time such as minute
discussing the speed of blood flow over an hour and using an area unit such as centimeter squared and a time unit such as hour
discussing the amount of blood flow over a specified period of time and using a volume unit such as liter divided by a unit of time such as minute
If a sonographer were to measure flow velocity, he would most likely record the flow velocity and report it to the physician in which of the following units of measure?
miles per hour
millimeters per microsecond
meters per hour
centimeters per second
centimeters per second
Of the following forms of flow, which is most likely associated with the arterial system?
pulsatile
phasic
steady
pulsatile
Of the following forms of flow, which is most likely associated with the venous system?
pulsatile
phasic
steady
phasic
In order for fluid to flow from one place to another, there must be a…
difference in temperatures (temperature gradient)
difference in velocities (velocity gradient)
difference in pressures (pressure gradient)
difference in molecular density (density gradient)
difference in pressures (pressure gradient)
When the left ventricle contracts, blood leaves the heart with a particular force or energy, but it immediately begins to lose steam (energy). What characteristic of blood contributes to this loss in energy?
viscosity
plasma
platelets
White Blood Cells
viscosity
Which of the following results in energy loss as blood moves through a vessel?
pressure
blood type
friction
content of the blood cells mitochondria
friction
Using your critical thinking skills, if inertial energy loss occurs when there is a change in the motion of blood (Newton’s Law of Motion), then in which of the following situations would it be least likely for an inertial energy loss to occur?
pulsatile blood flow
phasic blood flow
turbulent blood flow
steady blood flow
steady blood flow
You learned that a pressure gradient (or change/difference in pressure) is needed for blood to flow. For example, blood moves from areas of high pressure to areas of low pressure, just as humans avoid areas of high pressure in their lives and move to areas of comfort or low pressure.
If the concept is represented by the following:
Pressure Gradient = flow x resistance, what happens to the pressure gradient if resistance increases?
The pressure gradient or difference in pressure also increases.
The pressure gradient or difference in pressure decreases.
The pressure gradient or difference in pressure does not change at all.
The pressure gradient or difference in pressure also increases.
Voltage = current x resistance is a formula that described by…
Ohm’s Law
Which of the following best describes the role of the heart pump?
starts the flow of blood to the legs
starts the flow of blood to the heart
starts the flow of blood to the brain
starts the flow of blood to the body and lungs
starts the flow of blood to the body and lungs
All of the following are required for blood to flow out of the heart EXCEPT:
chemical change in the blood
electrical conduction
mechanical contraction of the heart muscle
pressure gradient between one side of a heart valve and the other
chemical change in the blood