1.2.2 inititiation of cardiac cycle

..

HideShow resource information

  • The SAN located in the right atria sends a wave of depolarisation to the AVN.
  • The wave of depolarisation is delayed to allow the atria to contract.
  • The wave of depolarisation goes down the bundle of his.
  • the bundle of his seperates in to the right and left ventricular walls.
  • The wave of depolarisation is carried by the purkinye fibers.
  • Contraction starts at the bottom and up - away from the apex
  • This results in a strong unison contraction
1 of 1

Comments

Braniac

Hey not bad notes!!! If you want you can look on mine that i made on this link :

http://getrevising.co.uk/resources/summarised_notes_on_cells_lungs_heart_and_digestion

I did this in my free time and i have been continously updating it!!

Enjoy **

Similar Biology resources:

See all Biology resources »See all Human, animal and plant physiology resources »