Anat and Phys

Question 1

What does the Right Main Artery branch into ?

Answer 1

• Right Marginal Artery
• Right Coronary Artery

Question 2

What does the Left Main Artery Branch into?

Answer 2

• Left anterior Descending
• Left Circumflex
• Left marginal Artery

Question 3

What coronary arteries are the inferior leads looking at?

Answer 3

• RCA AND/OR LCx

Question 4

What coronary arteries are the Lateral Leads looking at?

Answer 4

• LCx or Diagonal of LAD

Question 5

What Coronary arteries are the Anterior/Septal leads looking at

Answer 5

• LAD

Question 6

What are the 4 phases of an action potential in a contractile cell?

Answer 6

0: Fast sodium channels activated influx of sodium into cells
1: Fast Sodium channels close, Potassium channels activated
2: Calcium influx vs Potassium efflux creates plataeu of 200ms (Contraction occurs here)
3: Calcium channels close and slow voltage gate potassium pumps activate
4: Calcium actively transported out of the cell and Sodium efflux and Potassium influx due to Sodium potassium pump