7. End-diastolic volume measures the volume of blood left in each ventricle at t

Question

7. End-diastolic volume measures the volume of blood left in each ventricle at the end of ventricular diastole. (a) True b) False 8 Which of the following statements is TRUE about an electrocardiogram? (a) The P wave represents atrial depolarization, the QRS complex represents ventricular repolarization, and the T wave represents ventricular depolarization (b) The P wave represents atrial repolarization, the QRS complex represents (c) The P wave represents atrial repolarization, the QRS complex represents (d) The P wave represents atrial depolarization, The QRS complex represents ventricular depolarization, and the T wave represents ventricular repolarization ventricular repolarization, and the T wave represents ventricular depolarization ventricular depolarization, and the T wave represents ventricular repolarization Let's say that blood pressure has risen to a level higher than what it usually is during homeostasis Which of the following actions listed below would NOT occur to lower the blood pressure back to normal? 9. pl

Explanation / Answer

7. a. True

8. d. The P wave represents atrial depolarization. The QRS complex represents ventricular depolarization, and the T wave represents ventricular repolarization.

9. b. The vasomotor center would be stimulated and would cause increased sympathetic impulses to the walls of the arterioles

10. c. Blood volume would increase because the cardioacceleratory center in the brainstem would be activated and cause more firing of the SA node.

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