Explain why the contraction times of the atria and ventricles in the heart differ.

The atria have a shorter contraction time as the ventricles as they only need to pump blood into the ventricles. The contraction time of the ventricles is longer as they need to pump blood through the aorta to the whole body. 

PK
Answered by Panayiotis K. Biology tutor

5840 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

True or false - when you focus on a NEAR object, the lens becomes THINNER allowing light to reflect GREATLY.


Why is the human circulatory system a double system?


Describe competitive and non-competitive inhibition of enzyme action.


Use a genetic diagram to work out the probability that the offspring have cystic fibrosis if both parents are carriers.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning