Zoology - Body Fluids and Circulation Question with Solution | TestHub
Match the Column - I with Column - II:
| Column - I | Column II | ||
|---|---|---|---|
| P - wave | Depolarisation of ventricles | ||
| QRS complex | Repolarisation of ventricles | ||
| T - wave | Coronary ischemia | ||
| Reduction in the size of T - wave | Depolarisation of atria | ||
| Repolarisation of atria |
Select the correct optionNEET 2019 (All India)
Options:
Answer:
Solution:
The first deflection is the P wave linked with right and left atrial depolarization. A wave of which is invisible because of low amplitude.
The normal P wave is no higher than 2.5 mm (two-and-a half1-mm-divisions) tall and less than 120 ms (three 1-mm-divisions) in width in any lead.
The second wave is the QRS complex. The complex has a series of 3 deflections that reflects current associated with right and left ventricular depolarization. By convention, the first deflection in the complex, if negative, is called a Q wave. The first positive deflection in the complex is called an R wave. A negative deflection after an R wave is called an S wave. The most labile wave in the ECG is the T wave, which changes including low-amplitude T waves and abnormally inverted T waves, which may be the result of many cardiac and non-cardiac conditions.
