cardiovascular+study+guide.docx

Factors that affect bulk flow and water movement in

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Factors that affect bulk flow and water movement in the capillaries Factors that affect venous return Blood pressure Short-term control (baroreceptor response) Long-term control (kidneys) Study Questions: Chapter 20: Define Stroke Volume. Define Cardiac output. What occurs to stroke volume and heart rate with increased fitness? What are two things that can change cardiac output? Why does the heart have valves? What structures help control valve closure? Name the 4 chambers of the heart. Give another name for systole and diastole. What structure initiates contraction in the heart? How do auto-rhythmic action potentials differ from contractile cell action potentials? In the contractile cell, what ion causes depolarization? Repolarization? The plateau? In the auto-rhythmic cells, what ions cause early slow depolarization? Late slow depolarization? Fast depolarization? Repolarization? What is the purpose of the plateau phase in the contractile cell action potential? Name the 3 waves seen in an ECG. What do they represent? What does the P wave, QRS complex, and T-wave initiate in the heart? What is the purpose of the nodal delay in the conduction of the action potential? What electrical path does an action potential follow in the heart – what structures are included? What are the four phases of the cardiac cycle? The closing of the mitral valve triggers the beginning of _____________.
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