4. (Chemistry) chem. a. an organic chemical compound related to another by substitution of hydrogen atoms with alkyl groups: toluene is an analogue of benzene. b. an organic compound that is similar in structure to another organic compound: thiols are sulphur analogues of alcohols.
Yes since your heart rate fluctuates based upon your activity level. Resting heart rate varies greatly from your active heart rate. The P wave and the QRS complex represent depolarization of the atrial and ventricular muscle respectively. Why does the QRS complex have the larger amplitude? The QRS complex correlates with the action needed to push blood back out away from the heart that requires higher pressure. Heart rate was calculated based upon the peak-to-peak interval of the R waves.
1. Explain why ventricular contraction (systole) and the 'lub' sound occur immediately after the QRS complex. The lub sound occurs during the beginning stages of systole (ventricular contraction) and when the atrioventricular valves, which prevents blood from flowing back into the atria. The QRS complex is the first heart beat of the cycle, so directly after the heart beat or QRS complex, the valves close to prevent backflow and makes the âlubâ sound. 2. Explain why ventricular relaxation (diastole) and the 'dup' sound occur after the T wave. The T wave is the wave produced by the relaxation of the ventricles, which causes the blood pressure to drop and when the semilunar valves close, the âdupâ sound is made. 3.