Ch 11b: Cardiovascular System: Heart

Question 1

What is the name of the Atrioventricular (AV) valve on the Right side?

Answer 1

Tricuspid Valve

Question 2

What is the name of the AV valve on the Left side?

Answer 2

Bicuspid Valve

Question 3

What are the 2 Atrioventricular Valves?

Answer 3

Tricuspid
Bicuspid

Question 4

What are the 2 Semilunar (SL) valves?

Answer 4

Aortic
Pulmonary

Question 5

What is the name of the Semilunar valve on the Right side?

Answer 5

Aortic valve

Question 6

What is the name of the Semilunar valve on the left side?

Answer 6

Pulmonary Valve

Question 7

What side is the Pulmonary Circuit on?

Answer 7

The right heart

Question 8

What side is the Systemic Circuit on?

Answer 8

The left heart

Question 9

Heart depolarizes and contracts without what?

Answer 9

Nervous system stimulation

Question 10

Rhythm can be altered by what?

Answer 10

Autonomic nervous system

Question 11

Action potential is initiated by what?

Answer 11

Pacemaker cells

Question 12

1. The __________________ (pacemaker) generates impulse

Answer 12

Sinoastrial (AS) node

Question 13

2. The impulses (0.1 sec) is at the ________________

Answer 13

Atrioventricular (AV) node

Question 14

3. The __________ (bundle of HIS) connects the atria to ventricles

Answer 14

AV Bundle

Question 15

4. The _____________ conduct the impulses through the interventricular septum

Answer 15

Bundle Branches

Question 16

5. The _____________ depolarizes the contractile cells of both ventricles

Answer 16

Purkinje Fibers

Question 17

Which cardiac innervation is this:

• Increases heart rate
• SA and AV nodes
• Myocardium
• Coronary arteries

Answer 17

Sympathetic

Question 18

Which cardiac innervation is this:

• Decreases heart rate
• Mostly innervate SA and AV nodes

Answer 18

Parasympathetic

Question 19

What does the P wave do?

Answer 19

Atrial depolarization

Question 20

What does QRS complex do?

Answer 20

Ventricular depolarization

Question 21

What does the T wave do?

Answer 21

Ventricular repolarization

Question 22

What does the P-R Interval do?

Answer 22

Beginning of atrial excitation to beginning of ventricular excitation

Question 23

What does the S-T segment do?

Answer 23

Entire ventricular myocardium is depolarized

Question 24

What does the Q-T interval do?

Answer 24

Beginning of ventricular depolarization through repolarization

Question 25

What is the reason that Atrial repolarization isn’t able to get picked up on the ECG?

Answer 25

It’s hidden behind the QRS complex

Question 26

What is the first sound of the heart? (lub)

Answer 26

Closing of AV valves at beginning of ventricular systole

Question 27

What is the second sound of the heart (dub)

Answer 27

Closing of SL valves at beginning of ventricular diastole

Question 28

What does the pause between lub-dub indicate?

Answer 28

Heart relaxation

Question 29

What does the cardiac cycle refer to?

Answer 29

1 complete heartbeat
Both atria and ventricles contract then relax

Question 30

What does systole mean?

Answer 30

Contraction

Question 31

What does diastole mean?

Answer 31

Relaxation

Question 32

What is the Cardiac Output (CO)?

Answer 32

Amount of blood pumped out of ventricle per minute

Question 33

What is the Stroke volume (SV)?

Answer 33

Amount of blood pumped out of ventricle BEAT

Question 34

What is Heart Rate (HR)?

Answer 34

Beats per minute

Question 35

What is the Cardia Output equation?

Answer 35

CO = HR x SV