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.

Answered by Humza C. Biology tutor

5838 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How are impulses propagated along an axon?


Describe the processes of obtaining desired genes and their subsequent transfer into the cells of organisms.


Not all mutations lead to changed in amino acid sequence of polypeptides. Explain why.


Describe the processes that occur at a cholinergic synapse to allow signal transmission


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences