Which of the following is wrong about the cardiac cycle?
A: the diastolic period is longer than the systolic period
B: The atria and ventricles contract at the same time
C: The atria and ventricles can relax at the same time
D: The length of cardiac cycle is related to heart rate
A: the diastolic period is longer than the systolic period
B: The atria and ventricles contract at the same time
C: The atria and ventricles can relax at the same time
D: The length of cardiac cycle is related to heart rate
举一反三
- In a cardiac cycle, the average value of arterial blood pressure is<br/>called () A: Systolic pressure B: Diastolic pressure C: Pulse pressure D: Mean arterial pressure E: Central venous pressure
- The long run A: means a long period of time, always longer than a year. B: is a period of time in which all factors of production can be varied. C: is different for different firms. D: Both answers B and C are correct.
- Which indicator can be mainly reflected by the level of systolic blood pressure in general? A: Cardiac stroke volume B: Heart rate C: Peripheral resistance D: Capillary pressure in the microcirculation
- Which area allows the atria to completely empty as the ventricles fill with blood? A: A-V node B: A-V bundle C: S-A node D: Purkinje fibers
- Which of the following time period is the golden age of English drama? A: the Industrial Revolution period B: the Middle Ages C: the Modern time D: the Renaissance period