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Anglický jazyk
Cardiac cycle
Autor: Frederic P. Miller
Cardiac cycle is the term referring to all or any of the events related to the flow or blood pressure that occurs from the beginning of one heartbeat to the beginning of the next. The frequency of the cardiac cycle is the heart rate. Every single beat of... Viac o knihe
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O knihe
Cardiac cycle is the term referring to all or any of the events related to the flow or blood pressure that occurs from the beginning of one heartbeat to the beginning of the next. The frequency of the cardiac cycle is the heart rate. Every single beat of the heart involves five major stages: First, Late diastole which is when the semilunar valves close, the Av valves open and the whole heart is relaxed. Second, Atrial systole when atria is contracting, AV valves open and blood flows from atrium to the ventricle. Third, Isovolumic ventricular contraction it is when the ventricles begin to contract, AV valves close, as well as the semilunar valves and there is no change in volume. Fourth, ventricular ejection, Ventricles are empty, they are still contracting and the semilunar valves are open. The fifth stage is: Isovolumic ventricular relaxation, Pressure decreases, no blood is entering the ventricles, ventricles stop contracting and begin to relax, semilunars are shut because blood in the aorta is pushing them shut. Throughout the cardiac cycle, the blood pressure increases and decreases
- Vydavateľstvo: OmniScriptum
- Rok vydania: 2026
- Formát: Paperback
- Rozmer: 220 x 150 mm
- Jazyk: Anglický jazyk
- ISBN: 9786130201579
