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22 Cards in this Set
- Front
- Back
1. Describe the anatomy of the heart in terms of the chambers, the 2 nodes, and understand the functions of the heart.
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4 chambers,SA and AV nodes. Regulate Temp, PH, Fluid level, Blood to lungs, organs, tissues (O2 to tissues), CO2 and waste from tissues, Deliver hormones
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2. What path does blood flow take through the heart/lungs/capillaries?
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Blood to lungs,back to heart, out to organs, tissues, back to heart.
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3. What do the following terms represent? (Define)
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(see next 6 cards)
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Define: Q
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Cardiac output (Q= SV X HR)
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Define: HR
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Heart rate (BPM)
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Define: SV
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Stroke Volume. Volume of blood in mL pumped out of left ventricle.SV=EDV-ESV(Approx 70mL depending on individual size)
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Define: EDV
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End Diastolic Volume
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Define: ESV
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End Systolic Volume
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Define: EF %
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Ejection Fraction % of blood pumped out of left ventricle on each beat. SB>55%
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4. How do you calculate Cardiac Output? (* test question)
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Q = SV X HR
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5. Understand and be able to apply the Karvonen Heart rate formula? (Define Karvonen formula)
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The Karvonen formula is maximum heart rate - resting heart rate x desired intensity + resting heart rate. [ (220-age)-RHR ] x (% both exercise intensity ranges) + (RHR to each range)
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6. What happens to heart rate and stroke volume during exercise (as intensity increases)?
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Increase, SV levels off and can decrease slightly, HR linear increase
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7. What influence does endurance training have on Q, HRmax, resting heart rate (RHR), and SV?
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(See next 4 cards)
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Endurance training on: Q
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Improves (increases)
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Endurance training on: HRmax
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Not much change
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Endurance training on: resting heart rate (RHR)
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Improves (Lower)
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Endurance training on: SV
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Improves
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8. What effect does an elevated SV have on EDV or vice versa?
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Direct relationship SV^, then EDV^
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9. What is the blood pressure (BP) response during exercise?
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Increases (Mostly systolic) Diastolic can decrease slightly.
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10. What does the A-VO2 difference represent?
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The difference in O2 content from arteries to veins. (How effective is O2 uptake).
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11. What effect does an increase in sympathetic stimulation have on the heart?
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Increase (stimulate)
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12. What effect would a drug classified as a “Beta-blocker” have on the heart?
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Relaxing or dilation effect. Beta receptor (Heart) action would be blocked. Block catacholomines..
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