30.7.2013

Question 0

RMP of ventricular muscle cell

Answer 0

-90mV

Question 1

Types of cells in heart

Answer 1

Muscle cells
Conducting cells
Pacemaking cells

Question 2

Resting potential of sinus node cell

Answer 2

-60mV

Question 3

Absolute refractory period

Answer 3

Phase 1 and 2

Question 4

Effective refractory period

Answer 4

Cell is able to generate a potential but is not able to propagate it
Small portion of phase 3

Question 5

Supernormal phase

Answer 5

Cell may respond to less than normal stimulus

Question 6

Sinus node artery is a branch of

Answer 6

Right coronary artery 60-65% of time

Question 7

Sinus impulse is conducted to AV node through

Answer 7

Atria not internodal tracts

Question 8

Areas of AV node

Answer 8

Atrionodal region
Nodal region
Nodo-HIS region

Question 9

AV nodal region without automatic activity

Answer 9

nodal region

Question 10

AV nodal artery is a branch of

Answer 10

RCA 90% of time

Question 11

Branches of left bundle branch

Answer 11

Anterior fascicle
Mid septal fascicle
Posterior fascicle

Question 12

Blood supply of his bundle

Answer 12

Anterior and posterior descending coronary arteries