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BIO 208: A&P - CARLA 13

Blood returning from the systemic circuit first enters the Right atrium
Identify the factor that will increase cardiac output increased parasympathetic stimulation
According to Starling's law of the heart, the cardiac output is directly related to the venous return
As a result of the long refractory period, cardiac muscle cannot exhibit tetany
In which situation would the stroke volume be the greatest? when venous return is increased
Under conditions of hypercalcemia cardiac muscles become extremely excitable
The cardioacceleratory center in the medulla oblongata activates what neurons? sympathetic
Relaxation of the ventricles is called ventricular diastole
The heart is innervated by? both parasympathetic and sympathetic nerves
The volume of blood ejected from each ventricle during a contraction is called the stroke volume
The P wave of the ECG corresponds to atrial depolarization
The left ventricle pumps blood to the systemic circuit
The function of an atrium is to collect blood
The left and right pulmonary veins carry blood to the heart
Which of the following is true regarding cardiac muscle? Neither summation nor tetany can occur
The pacemaker cells of the heart are located in the SA node
Depolarization of the ventricles is represented on an electrocardiogram by the QRS complex
The first heart sound is heard when the AV valves close.
Which of the following the refractory periods is longer? cardiac muscle
Created by: nke1992