Cardiac

Question 1

Blood flow through heart:

Answer 1

Superior and inferior vena cava
Right atrium
Right ventricle
Pulmonary artery
Pulmonary vein
Left atrium
Left ventricle
Aorta

Question 2

Electrical Impulses:

Answer 2

SA node
AV node
Bundle of His
Left and Right bundle
Purkinje fibers

Question 3

When does depolarization occur?

Answer 3

When contractile and conduction pathway cells regain their resting polarized condition

Question 4

During _______ the heart muscle does not respond to any stimuli.

Answer 4

Ventricular contraction

Question 5

Ventricular contraction is also called:

Answer 5

Absolute refractory period

Question 6

During what period does the heart muscle recover excitability?

Answer 6

Relative refractory period

Question 7

Ejection (contraction) of blood from the ventricles occurs during:

Answer 7

Systole

Question 8

Ventricles fill with blood during:

Answer 8

Diastole
(Relaxation of heart muscle)

Question 9

Term for amount of blood ejected with each heartbeat:

Answer 9

Stroke volume

Question 10

Normal cardiac output

Answer 10

4-8 L/min

Question 11

Equation for cardiac output

Answer 11

CO=SV x HR

Question 12

Term for amount of blood pumped by each ventricle in one minute:

Answer 12

Cardiac output

Question 13

Factors that affect cardiac output:

Answer 13

Heart rate
Sustained rapid HR = reduced diastolic filling and coronary artery perfusion