Quiz 2 Kahoot

Question 1

During which phases of the cardiac cycle are AV valves closed?

Rapid Ventricular Filling
Isovolumetric Ventricular Relaxation
Isovolumetric Ventricular Contraction
Ventricular Ejection
Diastasis
Atrial Systole

Answer 1

Isovolumetric Ventricular Relaxation
Isovolumetric Ventricular Contraction
Ventricular Ejection

Question 2

Which are intercellular pathways which allow for continuous cell to cell transmission of impulses?

Desmosomes
Gap Junction Channels
Sarcomeres
Sarcoplasmic Reticulum

Answer 2

Gap Junction Channels

Question 3

Which subunits of troponin binds with calcium?

TnC
Tropomyosin
TnT
TnI

Answer 3

TnC

Question 4

Which is an enzyme that catalyzes the hydrolysis of ATP?

ATP-synthase
Cyclic AMP
ATPase
Water

Answer 4

ATPase

Question 5

The thin membrane that encloses the muscle cell is called the __________.

Answer 5

sarcolemma

Question 6

Excitation-contraction coupling occurs during phase ____ of the non-pacemaker action potential.

Answer 6

Phase 2

Question 7

The SA node and AV node action potentials have slight differences in which phases of their action potentials?
(more than 1 answer)

both action potentials are exactly the same
Phase 4
Phase 3
Phase 0

Answer 7

Phase 4
Phase 0

Question 8

Phase 0 is fastest in which of the following action potentials?

AV node
Purkinje Fibers
Phase 0 occurs at the same rate in all action potentials
SA node

Answer 8

Purkinje Fibers

Question 9

A duration where only strong impulses will depolarize the cell is referred to as the __________ refractory period.

Answer 9

Relative

Question 10

Which of the following afterdepolarizations occur when the membrane potential has returned to resting state?

Delayed Afterdepolarization

Early Afterdepolarization

Answer 10

Delayed Afterdepolarization

Question 11

Which of the following ions are negatively charged?

Potassium
Calcium
Chloride
Sodium

Answer 11

Chloride

Question 12

Which of the following stores calcium ions?
(more than 1 answer)

T-tubules
Terminal Cisternae
Sarcolemma
Sarcoplasmic Reticulum

Answer 12

Terminal Cisternae
Sarcoplasmic Reticulum

Question 13

Ventricular ejection is synonymous with which of the following?

Early Ventricular Systole
Late Ventricular Systole
Early Ventricular Diastole
Late Ventricular Diastole

Answer 13

Late Ventricular Systole

Question 14

Which of the following correctly describes the pacemaker rate of the atrial myocardium?

40-60 BPM
20-40 BPM
60-100 BPM
The atrial myocardium does not have a pacemaker rate.

Answer 14

The atrial myocardium does not have a pacemaker rate.

Question 15

Which of the following correctly describes the conduction velocity through the bundle branches?

<0.01 m/s
0.02-0.05 m/s
1.0-1.2 m/s
2.0-4.0 m/s

Answer 15

2.0-4.0 m/s