Cardiac Conduction System Flashcards
1
Q
Myogenic definition
A
The capacity of the heart to generate its own impulses
2
Q
what is the SAN (Sino Atrial Node)
A
Hearts pacemaker which generates the heartbeat
3
Q
What is the AVN (AtrioVentricularNode)
A
Relays the impulses between atriums and ventricular chambers of the heart
4
Q
What is the Bundle of HIS
A
They transmit electrical impulses from the AVN to the ventricles
5
Q
What is ventricular systole
A
When the ventricles of the heart contract
6
Q
How does the heart beat (6 steps)
A
Impulse
SAN
AVN
Bundle of HIS
Purkinje Fibres
Ventricular systole
7
Q
What is cardiac hypertrophy
A
The thickening of the muscular wall of the heart so it becomes bigger and stronger in order to increase stroke volume