Alterations in the Function of the Heart all Questions & answers solved accurately with Complete Solution Graded A+ latest version

Alterations in the Function of the Heart
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Arterial vessels carry _______ blood, venous vessels carry _______
blood.- oxygenated; deoxygenated


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The only venous vessles that carry oxygenated blood are the
_____________ and ______________.- pulmonary venules and veins

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Trace blood flow "forward" through the heart.- SVC / IVC → RA → RV →
PA → lungs → PV \n → LA → LV → aorta → systemic circulation

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Trace blood flow "backward" through the heart.- LV --> LA --> PV -->
lungs (edema) \n lungs -->PA -->RV --> RA --> SVC/IVC --> (edema)

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Define systole- part of the heart beat where the RV and LV are
contracting and ejecting blood from their chambers

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what is the sinoatrial (SA) node?- structure located in the right atrium that
tells the heart to "beat" or squeeze by sending out an electrical signal

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what is stroke volume?- amount of blood ejected per contraction (or
squeeze, or with each beat of the heart)
The average amount is around 70ml/beat.

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what is an ECG?- electrical signal that is created by the heart, starting
with the SA node, can be recorded on paper by using specialized patches
on the skin and recoding equipment.
Each depolarization, contraction, and repolarization of the chambers of the
heart can be recorded on paper and analyzed by nurses and other
healthcare providers

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Define Cardiac Output (C.O.)- amount of blood ejected by the LV p/min
Normal CO is 4 - 6 liters of blood per minute