The Heart

Question 1

Where is the heart located

Answer 1

In the mediastanum of thoracic cavity

Question 2

Surrounds the heart

Answer 2

Pericardium

Question 3

Is posterior Site where great vessels attach to the heart

Answer 3

Base

Question 4

Inferior tip of the heart

Answer 4

Apex

Question 5

Superior chambers

Answer 5

Atria

Question 6

Receives deoxygenated blood from systemic circuit

Answer 6

Right atrium

Question 7

Receives oxygenated blood from pulmonary circuit

Answer 7

Left atrium

Question 8

Inferior chambers

Answer 8

Ventricles

Question 9

Ejects deoxygenated blood to pulmonary trunk

Answer 9

Right ventricle

Question 10

Divides into pulmonary arteries and sends blood to lungs

Answer 10

Pulmonary trunk

Question 11

Ejects oxygenated blood into aorta

Answer 11

Left ventricle

Question 12

Number the process of circulation through the heart (1-5)

Deoxygenated blood is received by right atrium

Answer 12

1

Question 13

Where does the deoxygenated blood that is received by the right atrium come from

Answer 13

Superior vena cava, inferior vena cava, coronary sinus

Question 14

Number the process of circulation through the heart (1-5)

Pulmonary veins carry oxygenated blood from lungs to left atrium

Answer 14

4

Question 15

Number the process of circulation through the heart (1-5)

Blood enter right ventricle and is ejected into pulmonary trunk

Answer 15

2

Question 16

Number the process of circulation through the heart (1-5)

Oxygenated blood enters left ventricle and is ejected into aorta and systemic arteries

Answer 16

5

Question 17

Number the process of circulation through the heart (1-5)

Pulmonary trunk divides to form pulmonary arteries that deliver blood to lungs

Answer 17

3

Question 18

Monitors electrical signals as they as they move through the body and cardiac muscle

Answer 18

Electrocardiogram

Question 19

Evaluates ionic movement throughout the body

Answer 19

ECG

Question 20

Evaluates ionic movement across a cellular membrane

Answer 20

Recording microelectrode

Question 21

3 major components of a healthy ECG

Answer 21

P wave
QRS complex
T wave

Question 22

Atrial depolarization

Answer 22

P wave

Question 23

Ventricular depolarization

Answer 23

QRS complex

Question 24

What occurs at the same time

Answer 24

Atrial repolarization

Question 25

Ventricular repolarization

Answer 25

T wave

Question 26

ECG ________ and _______ are regions between waves

Answer 26

Segments and intervals

Question 27

From beginning of P wave to begining of QRS complex

Answer 27

PR interval

Question 28

What does a delay in the PR interval indicate

Answer 28

Heart block

Question 29

Elevation of __________ Indicates a heart attack

Answer 29

ST segment

Question 30

Period of time and set events that occur during one complete beat of the heart

Answer 30

Cardiac cycle

Question 31

Contraction

Answer 31

Systole

Question 32

Relaxation

Answer 32

Diastole

Question 33

What is the 5 stages of the cardiac cycle

Answer 33

Total diastole Atrial systole Early ventricular systole Late ventricular systole Early ventricular diastole

Question 34

-Myocardium is completely relaxed -blood passively fills chambers of the heart -AV valves open and SL valves are closed

Answer 34

Total diastole

Question 35

-Contraction of atrial adds blood to ventricular volume -130ml -AV valves are open and SL valves are closed -aortic pressure decreases as blood flows into systemic circuit

Answer 35

Atrial systole

Question 36

-Refered to as isovolumetric contraction phase -ventricles contract and ventricular pressure increases -AV valves close and produce S1 heart sound -since all 4 valves are closed there is no change in ventricular volume

Answer 36

Early ventricular systole

Question 37

-Ventricular ejection phase -ventricular pressure increases as SL valves open; AV valves remain closed -blood is ejected into pulmonary trunk and aorta -atria is relaxed

Answer 37

Late ventricular systole

Question 38

-The second phase of ventricular diastole -ventricles continue to relax and pressure decreases -When ventricular pressure decreases lower than atrial pressure AV valves opeen

Answer 38

Late ventricular diastole

Question 39

Normal heart sounds are produced by the closure of ___________ or __________

Answer 39

atrioventricular valves or semilunar valves

Question 40

First heart sound is produced by

Answer 40

AV valves

Question 41

Second heart sound is produced by

Answer 41

SL valves

Question 42

Illustrates the pressure within the atria, ventricles and aorta during the cardiac cycle

Answer 42

Wiggers diagram

Question 43

The amount of blood ejected by each ventricle per minute

Answer 43

Cardiac output

Question 44

Average Cardiac output of an adult

Answer 44

5L/min

Question 45

Both ______ and _______ can be regulated to control cardiac output

Answer 45

Heart rate and stroke rate

Question 46

Only part of the end of diastolic volume EDV is ejected

Answer 46

Ejection Fraction