answers 2026\2027 A+ Grade
Blood flow through the heart
- correct answer SVC --> Rt atria --> Tricuspid --> Rt ventricle --> Pulmonic valve --> Lungs --> Lt atria -->
Mitral valve --> Lt ventricle --> aortic valve --> aorta --> Body
EKG Times
- correct answer 6 second strip
1 small block = 0.04 secs
1 big block = 5 small boxes = 0.20 secs
15 big blocks = 3 seconds
P Wave
- correct answer atrial depolarization
PR Interval
- correct answer time it takes for the impulse to get from atrial to ventricles
0.12 - 0.20 seconds
QRS Interval
- correct answer ventricular depolarization
< 0.12 seconds
ST Segment
- correct answer early depolarization of ventricles
depression = myocardial infarction