The sinoatrial node (SAN) sets the heart's rhythm by generating electrical impulses that cause atrial contraction.
The sinoatrial node (SAN) initiates the heartbeat by generating electrical impulses that cause the atrial muscle to contract rhythmically.
Front | Sinoatrial node (SAN) |
---|---|
Back | Sets the rhythm of the heartbeat by sending out regular waves of electrical activity to the atrial wall Generates electrical impulses that cause the cardiac muscle to contract |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Controlled rate san fires unconsciously part brain called
Previous card: Myogenic contract relax receiving signals nerves
Up to card list: AQA Biology Flashcards