with correct answers provided
Which chamber has more pressure - ✅✅Pressure in Atrium
Av valves open - ✅✅During atrial contraction and allow blood to flow only to ventricles
1st heart sound is generated by what? - ✅✅Closure of AV valves
semilunar valves open - ✅✅During ventricular contraction and allow blood to flow only into arteries
2nd heart sound is generated by what? - ✅✅Closure of semilunar valves
Autorythythmic cells are concentrated where? - ✅✅Sinoatrial node located in the RA
What are generated in SA node - ✅✅Spontaneous depolarizations
What do spontaneous depolarisations cause - ✅✅They pass into surrounding myocardial cells and
generate contraction as follows:
- Atrial myocardial cells
- Pause (fibrous layer)
- Ventricular myocardial cells
ECG detects what? - ✅✅depolarisation/repolarisation of cardiac tissue
- P wave: results from atrial depolarisation
- QRS wave: results from ventricular depolarization, atrial repolarization is hidden by this wave
- T wave: results from ventricular repolarization