alleryIn a typical ECG, the QRS complex represents:
AAtrial depolarisation (P wave is for this)
BVentricular repolarisation (T wave is for this)
CAtrial repolarisation (overshadowed by ventricular)
DVentricular depolarisation (contraction)
Answer & Solution
Correct answer: D. Ventricular depolarisation (contraction)
QRS complex = ventricular depolarisation = ventricular contraction (most prominent ECG feature).
P = atrial depolarisation.
T = ventricular repolarisation.
Atrial repolarisation is hidden within the QRS.
Keep practising Unit 8G: Comparative Physiology: Circulation, Respiration & Gas Exchange
Browse all Unit 8G: Comparative Physiology: Circulation, Respiration & Gas Exchange questions for AP Biology, or explore more Biology topics.
Related questions
Fill the photosynthesis blanksMatch the organ to its functionDuring deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lacChoose the correct path of urine in our bodyLack of oxygen in muscles often leads to cramps among cricketers. This results due toWhich is the first enzyme to mix with food in the digestive tract?The opening and closing of the stomatal pore depends uponChoose the event that does not occur in photosynthesis