Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Chapter S3, Problem 2.1CT
In testing the effects of different ions on heart action, why were chlorides used in each case?
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In testing the effects of different ions on heart action, why were chlorides used in each case?
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Laboratory Manual For Human Anatomy & Physiology
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- I need to calculate the approximate heart rate based on the given ECG results, but I can't get how to determine the length of time between two consecutive R waves. What I see, it's one second between the two highest waves (I suppose they are R waves). But it means the heart rate should be 60 beats per minute, but there is no option for this answer. Teach me how to determine correctly the length of time between two consecutive R waves.arrow_forwardIf you have 6-MAM, acetylcodeine, and heroin in a GCMS column (silica capillary column), why is the elution order: acetylcodeine, then 6-MAM, then heroin (in order from fastest elution to slowest)?arrow_forwardWhat is the Frank-Starling law and how might it be affected by changing the heart rate in our isolated frog heart preparation?arrow_forward
- In the calculation of the heart rate using the number 300 method in the ECG, where did the number 300 come from? Why exactly was this method adopted?arrow_forwardBy how much would a blood vessel need to expand using vasodilation to increase blood flow by 200% (3x)?arrow_forwardWhat is the blood flow rate through a vessel given the following: ΔP = 120 mmHg; radius = 6 mm; length = 20 mm; and viscosity of the blood = 4.5? ? (conversion factors: 1 mmHg = 0.013 dynes/cm2 and a viscosity of 1.0 = 0.01 dyne sec/cm2)arrow_forward
- what does the formation of the strip ventricular canal from the first heart field look like ? Give typing answer with explanation and conclusionarrow_forwardDescribe the action potential of an autorhythmic cell in the heart.a) Indicate how the opening and closing of each ion channel affects the membrane potential of the cell.b) Provide one similarity between the action potential of an autorhythmic cell and the action potential of a neuron.c) Provide one difference between the action potential of an autorhythmic cell and the action potential of a neuron.arrow_forwarda cardiac ultrasound patient is found to have a left ventricle stroke output of 98mL and a resting heart rate of 65bpm, what is the patients cardiac output?arrow_forward
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