Heart beat step-by-step

Question 1

1

Answer 1

• SA node receives impulse from CCC in the medulla

Question 2

2

Answer 2

• SA node sends impulse which spreads across the atria causing a contraction

Question 3

3

Answer 3

• Impulse is absorbed by the AV node located at the bottom of the right atrium

Question 4

4

Answer 4

• AV node sends impulses down the left and right Bundle of HIS in the septum

Question 5

5

Answer 5

• impulse reaches apex of heart and runs down the purkinje fibres

Question 6

6

Answer 6

• impulses spread across the atrium causing a contraction