Describe what each point of an ECG represents.
P wave: atrial depolarisation and subsequent contraction. QRS complex: Ventricular depolarisation and subsequent contraction. Q wave is negative due to left to right depolarisation of ventricular septum. Atrial repolarisation occurs here but electrical activity is masked by QRS complex. ST segment: ventricular repolarisation.
Need help with Biology?
One to one online tuition can be a great way to brush up on your Biology knowledge.
Have a Free Meeting with one of our hand picked tutors from the UK’s top universities
Find a tutor
