11.2 Cardiovascular System
Presentation
•
Science
•
9th - 12th Grade
•
Medium
Standards-aligned
Stacy King
Used 6+ times
FREE Resource
16 Slides • 9 Questions
1
Open Ended
What is the order of blood flow through the heart? (major vessels, valves, and chambers)
2
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5
Multiple Choice
the pace maker
SA node
AV node
bundle of his
purkinje fibres
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8
Multiple Choice
Which of the following correctly describes the autonomic regulation of nodal activity in the heart?
Parasympathetic stimulation (M2 receptors) increases heart rate by increasing If and Ca²⁺ influx.
Sympathetic stimulation (β1 receptors) increases heart rate by enhancing If and Ca²⁺ influx.
9
10
Multiple Choice
Which of the following correctly differentiates nodal cells from cardiomyocytes in terms of their electrophysiological properties?
Nodal cells have a resting membrane potential of -60mV and depolarize gradually due to the funny current (If).
Cardiomyocytes exhibit gradual depolarization due to the funny current (If) and a slow influx of Na⁺ ions.
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12
Open Ended
What are key differences between nodal cells and cardiomyocytes?
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17
Labeling
What part of an ECG represents the repolarization of the heart?
T Wave
QRS Complex
P Wave
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19
Multiple Choice
Which does not describe cardiac output?
It is determined by body size and aerobic fitness
The amount of blood pumped by the heart each minute
It is the amount of blood pumped out of the heart each beat
It is the product of heart rate and stroke volume
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21
Multiple Choice
What is stroke volume?
the volume of oxygen transported in the blood
the volume of blood pumped out of the heart each minute
the volume of blood pumped out of the heart in each beat
the number of beats per minute
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24
Multiple Choice
Factor that increases cardiac output
Decrease blood volume
Exercise
Decreased Stroke Volume
High blood pressure
25
What is the order of blood flow through the heart? (major vessels, valves, and chambers)
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