The free-flowing blood located in the middle of a blood vessel is called _______. 1)
A) laminar flow B) friction flow C) gradient flow D) lumen flow
laminar flow
The flow rate of a liquid is _______. 2)
A) inversely proportional to the pressure gradient
B) directly proportional to the pressure gradient
C) directly proportional to the pressure gradient and the resistance
D) directly proportional to the resistance
directly proportional to the pressure gradien
Which of the following is INCORRECTLY matched with the corresponding equipment used in this
experiment?
3)
A) right beaker — an organ that is receiving the blood
B) left beaker — blood flowing from the heart
C) flow tube between the beakers — an artery
D) All of the above are matched correctly
All of the above are matched correctly
Which of the following has the greatest effect on peripheral resistance? 4)
A) blood vessel diameter
B) blood vessel length
C) viscosity
D) Viscosity, blood vessel length and blood vessel diameter affect peripheral resistance equally.
blood vessel diameter
How does the body decrease the blood vessel radius? 5)
A) vasodilation B) cardiac muscle contraction
C) vasoconstriction D) valve closure
vasoconstriction
When the radius of the flow tube is decreased, the _______. 6)
A) pressure gradient decreases
B) friction decreases
C) fluid flow rate and the pressure gradient decrease
D) fluid flow rate decreases
E) fluid flow rate increases
fluid flow rate decrease
During exercise, we might expect blood vessels in the skeletal muscle to be somewhat
_______________ and the blood vessels in the digestive organs to be somewhat ____________.
7)
A) constricted, constricted B) constricted, dilated
C) dilated, dilated D) dilated, constricted
dilated, constricted
Laminar flow of the blood is achieved through _______. 8)
A) smooth muscle contraction
B) vasoconstriction and smooth muscle contraction
C) vasoconstriction
D) vasodilation
vasodilation
Polycythemia results in _______. 9)
A) decreased viscosity
B) decreased resistance to flow
C) decreased resistance to flow and decreased viscosity
D) increased resistance to flow and decreased viscosity
E) increased resistance to flow
increased resistance to flow
What is the effect of increased viscosity? 10)
A) decreased peripheral resistance
B) decreased flow rate and decreased peripheral resistance
C) increased flow rate
D) decreased flow rate
decreased flow rate
Formed elements in the blood _______. 11)
A) include platelets
B) include whole cells
C) slide past one another
D) include platelets and whole cells that slide past one another
include platelets and whole cells that slide past one another
Which of the following is INCORRECTLY matched? 12)
A) thrombocytes — plasma proteins B) leukocytes — white blood cells
C) erythrocytes — red blood cells D) All of the above are matched correctly.
thrombocytes — plasma proteins
In this activity, which of the following were kept constant? 13)
A) blood vessel radius and blood vessel length
B) blood vessel radius and blood flow rate
C) blood vessel radius and viscosity
D) blood pressure and blood flow rate
blood vessel radius and blood vessel length
Which of the following describes the graph of flow versus viscosity? 14)
A) As viscosity increased, the flow rate increased and the graph was curved.
B) As viscosity increased, the flow rate decreased and the graph was curved.
C) As viscosity increased, the flow rate decreased and the graph was linear.
D) As viscosity increased, the flow rate increased and the graph was linear.
As viscosity increased, the flow rate decreased and the graph was curved.
Which viscosity had the fastest flow rate? 15)
A) 8
B) 6
C) 2
D) 1
E) 4
1
What is the typical range for viscosity of the blood? 16)
A) 3 to 5 B) 4 to 6 C) 6 to 8 D) 1 to 3
3 to 5
When blood vessel length increases, _______. 17)
A) surface area increases
B) friction decreases
C) resistance to flow decreases
D) surface area increases and resistance to flow decreases
surface area increases
Which of the following is true of blood vessel length? 18)
A) It increases when we lose weight. B) It increases as we approach puberty.
C) It decreases when we gain weight. D) All of the above are true.
It increases as we approach puberty.
In this experiment, _______. 19)
A) blood vessel length will be varied
B) blood vessel length will be kept constant
C) blood vessel radius will be varied
D) blood vessel radius will be kept constant
E) blood vessel radius will be kept constant and blood vessel length will be varied
blood vessel radius will be kept constant and blood vessel length will be varied
Increasing blood vessel length _______. 20)
A) has the same effect as increasing blood vessel radius
B) has the same effect as increasing blood vessel radius and increases resistance to flow
C) increases resistance to flow
D) has the same effect as decreasing blood vessel radius and increases resistance to flow
E) has the same effect as decreasing blood vessel radius
has the same effect as decreasing blood vessel radius and increases resistance to flow
Which flow tube length had the greatest flow rate? 21)
A) 30 mm
B) 40 mm
C) 20 mm
D) 10 mm
E) All flow tube lengths had the same flow rate.
10 mm
Which of the following has the greatest effect on blood flow? 22)
A) blood vessel length
B) blood vessel radius
C) viscosity
D) Blood vessel radius, viscosity and blood vessel length all have an equal effect.
blood vessel radius
Which of the following describes why the body might need to increase vessel length? 23)
A) to accommodate weight loss
B) to accommodate height changes
C) to accommodate weight gain
D) to accommodate weight gain and height changes
to accommodate weight gain and height changes
In this activity, which variable will be changed? 24)
A) vessel radius B) pressure
C) vessel length D) vessel radius and pressure
pressure
Arteries that are closer to the heart _______. 25)
A) have less elastic tissue
B) must be able to withstand pressure changes
C) have more elastic tissue
D) have less elastic tissue and must be able to withstand pressure changes
E) have more elastic tissue and must be able to withstand pressure changes
have more elastic tissue and must be able to withstand pressure changes
In the cardiovascular system, the pressure gradient is provided by _______. 26)
A) peripheral resistance in the blood vessels
B) the force of contraction of the heart
C) the force of contraction of the heart and peripheral resistance in the blood vessels
D) osmosis
the force of contraction of the heart and peripheral resistance in the blood vessels
Blood flow is _______. 27)
A) inversely proportional to cardiac output
B) not proportional to the pressure gradient
C) inversely proportional to the pressure gradient
D) directly proportional to the pressure gradient
directly proportional to the pressure gradient
Which of the following result(s) in an increase in fluid flow rate? 28)
A) increase in pressure
B) decrease in radius diameter
C) increase in radius diameter
D) increase in pressure and decrease in radius diameter
E) increase in pressure and increase in radius diameter
increase in pressure and increase in radius diameter
Describe the plot of pressure versus flow rate. 29)
A) It was linear, and the flow rate decreased with increased pressure.
B) It was curved, and the flow rate increased with increased pressure.
C) It was curved, and the flow rate decreased with increased pressure.
D) It was linear, and the flow rate increased with increased pressure.
It was linear, and the flow rate increased with increased pressure.
In this activity, we changed the pressure delivered by the left beaker. This is analogous to _______. 30)
A) increasing the length of the flow tube
B) increasing the force of contraction of the heart
C) increasing the viscosity of the blood
D) decreasing the radius of the blood vessel
increasing the force of contraction of the heart
During the ejection period, _______. 31)
A) blood is pumped into the pulmonary trunk
B) the atria are filling
C) blood is pumped into the aorta and the pulmonary trunk
D) the ventricles are filling
E) blood is pumped into the aorta
blood is pumped into the aorta and the pulmonary trunk
Cardiac output is _______. 32)
A) equal to heart rate times stroke volume.
B) equal to heart rate times (ESV minus EDV)
C) equal to blood flow
D) equal to blood flow and equal to heart rate times stroke volume
E) All of the above are correct.
equal to blood flow and equal to heart rate times stroke volume
The left side of the heart pumps blood _______. 33)
A) to the lungs
B) through the aortic valve
C) through the tricuspid valve
D) through the tricuspid valve and to the lungs
through the aortic valve
What variable(s) can the cardiovascular system alter to maintain blood pressure? 34)
A) stroke volume B) resistance
C) heart rate D) heart rate, stroke volume and resistance
heart rate, stroke volume and resistance
The volume in the pump when the pump piston is all the way down represents the _______. 35)
A) end diastolic volume B) cardiac output
C) stroke volume D) end systolic volume
end systolic volume
When the flow tube radius increased, _______. 36)
A) resistance decreased and pump rate increased to maintain pressure
B) resistance decreased and pump rate decreased to maintain pressure
C) resistance decreased
D) pump rate increased to maintain pressure
E) pump rate decreased to maintain pressure
resistance decreased and pump rate increased to maintain pressure
Which of the following stayed constant throughout this activity? 37)
A) stroke volume B) pump rate
C) flow rate D) right flow tube radius
stroke volume
Which right flow tube radius resulted in the fastest flow rate? 38)
A) 3.0 mm B) 5.0 mm
C) 1.0 mm D) All sizes had the same flow rate.
5.0 mm
An increase in venous return will _______. 39)
A) increase stroke volume
B) increase the contractility of the heart
C) increase EDV
D) increase EDV, increase stroke volume and increase the contractility of the heart
increase EDV, increase stroke volume and increase the contractility of the heart
The overlap length of cardiac muscle in the healthy heart is _______. 40)
A) optimum for maximum tension production
B) decreased as the heart is stretched
C) optimized when the length of the sarcomere is decreased
D) less than optimum for maximum tension production
less than optimum for maximum tension production
Afterload is the pressure threshold that must be exceeded to open _______. 41)
A) the pulmonary semilunar valve and the tricuspid valve
B) the tricuspid valve
C) the aortic semilunar valve and the pulmonary semilunar valve
D) the aortic semilunar valve
E) the pulmonary semilunar valve
the aortic semilunar valve and the pulmonary semilunar valve
An increase in preload is a result of _______. 42)
A) decreased stroke volume B) decreased EDV
C) increased stroke volume D) increased EDV
increased EDV
Increase in stroke volume is a result of _______. 43)
A) increased contractility of the heart
B) increased EDV
C) increased contractility of the heart, increased EDV and increased preload
D) increased preload
increased contractility of the heart, increased EDV and increased preload
Which variable was altered in this activity? 44)
A) vessel radius B) flow rate C) blood pressure D) stroke volume
stroke volume
An increase in venous return _______. 45)
A) occurs during exercise B) decreases EDV
C) occurs with severe blood loss D) results in decreased preload
occurs during exercise
The flow rate in this activity _______. 46)
A) stayed constant, because pump rate decreased as the stroke volume increased
B) varied with stroke volume
C) varied with vessel radius
D) stayed constant, because pump rate increased as the stroke volume increased
stayed constant, because pump rate decreased as the stroke volume increased
Aortic valve stenosis is characterized by _______. 47)
A) increased resistance to blood flow
B) narrowing of the aortic semilunar valve
C) thickening of the myocardium
D) increased resistance to blood flow, thickening of the myocardium and narrowing of the aortic semilunar valve
increased resistance to blood flow, thickening of the myocardium and narrowing of the aortic semilunar valve
In this activity, the right flow tube simulates the _______. 48)
A) superior vena cava B) aorta
C) pulmonary vein D) pulmonary trunk
The compensating mechanisms tested in this activity include all of the following EXCEPT _______. 49)
A) increasing contractility B) increasing preload
C) decreasing preload D) decreasing afterload
increasing preload
In the activity, decreasing pressure in the right beaker is analogous to _______. 50)
A) increasing contractility B) decreasing preload
C) increasing preload D) decreasing afterload
decreasing afterload
Increasing the left flow tube radius corresponds to _______. 51)
A) increasing viscosity B) increasing preload
C) increasing contractility D) increasing afterload
increasing preload
In this activity, the pump simulates the _______. 52)
A) right ventricle B) aortic semilunar valve
C) pulmonary semilunar valve D) left ventricle
left ventricle
When the left flow tube radius was increased, _______. 53)
A) the flow rate increased B) the stroke volume increased
C) the flow rate decreased D) the stroke volume decreased
the flow rate increased
Patients with aortic valve stenosis experience _______. 54)
A) increased thickness in the myocardium
B) increased thickness in the myocardium and an increase in chamber volume
C) increased thickness in the myocardium and a decrease in chamber volume
D) a decrease in chamber volume
E) an increase in chamber volume
increased thickness in the myocardium and a decrease in chamber volume
x

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