Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

A&P internet cards > Heart > Flashcards

Heart Flashcards

1
Q

What structures are considered to be part of the cardiac conduction system?

A

SA node, AV node, Purkinje fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What layer lines the inner chamber of the heart?

A

Endocardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The blunt inferior point tip of the heart is known as what?

A

Apex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the three layers of the heart wall, from deep to superficial?

A

Endocardium, myocardium, epicardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the volume of blood ejected by each ventricle in one minute called?

A

Cardiac output

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the volume of blood ejected by a ventricle in one contraction of the heart?

A

stroke volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the components of the cardiovascular system?

A

heart, blood vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a recording of all nodal and myocardial action potentials in the heart?

A

ECG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which side of the heart supplies blood to the pulmonary circuit?

A

Right

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the relationship between pressure and volume?

A

they are inversely proportional

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Starting with the superior and inferior venae cavae, list the chambers of the heart in the order which the blood would flow

A

1: Right atrium
2: Right ventricle
3: Left atrium
4: Left ventricle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The inferior chambers of the heart that pump blood to the arteries are called what?

A

ventricles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the study of the heart and its disorders called?

A

cardiology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what circuit carries blood from the right ventricle to the lungs for gas exchange and returns it to the left atrium of the heart?

A

pulmonary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Starting with the return of blood to the heart, place the major phases of the cardiac cycle in order

A

1: Ventricular filling
2: Isovolumetric contraction
3: Ventricular ejection
4: Isovolumetric Relaxation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the normal heart rate set by the SA node referred to as?

A

sinus rhythm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

the heartbeat is coordinated by what?

A

cardiac conduction system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What chemicals can cause increased heart rate?

A

caffeine, nicotine, thyroid hormone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What term refers to the relaxation of the heart?

A

diastole

20
Q

What carries action potentials throughout the ventricular myocardium to excite the ventricles?

A

purkinje fibers

21
Q

Which part of the cardiac conduction system acts as the pacemaker?

A

sinoatrial (SA) node

22
Q

List the events of an action potential in a ventricular cardiocyte in order

A

1: Voltage-gated Na+ channels open
2: Influx of Na+ causes more Na+ channels to open; depolarization
3: Na+ channels close as membrane potential peaks at +30mV
4: Ca2+ enters through slow calcium channels; creates plateau
5: Ca2+ channels close, K+ channels open; repolarization

23
Q

What are short, thick, branched muscle cells of the heart?

A

cardiocytes

24
Q

What term refers to the contraction of the heart?

A

systole

25
Q

Which circuit pumps blood from the left side of the heart to the body tissue?

A

systemic circuit

26
Q

The smaller blood vessels on the outside of the heart are what?

A

inferior vena cava

27
Q

What are the functions of the fibrous skeleton?

A

1: Provides electrical insulation between the atria and ventricles;
2: Provides structural support for the heart;
3: Anchors the cardiocytes and give them something to pull against

28
Q

What branch of the left coronary artery travels down the front of the heart to the apex of the heart?

A

anterior interventricular

29
Q

The blood vessel that collects venous drainage from the anterior side of the heart and travels alongside the anterior interventricular artery is what?

A

The great cardiac vein

30
Q

Another name for the epicardium is what?

A

visceral pericardium

31
Q

A sphygmomanometer is used to measure what?

A

blood pressure

32
Q

What is used to measure blood pressure?

A

sphygmomanometer

33
Q

What is the ability to rhythmically depolarize without outside stimulation called?

A

autorhythmic

34
Q

Which arterial branch usually arises from the right coronary artery and supplies the back wall of the heart, both left and right ventricles?

A

posterior interventricular branch

35
Q

Which groove extends downward from the coronary sulcus on the back of the heart?

A

posterior interventricular sulcus

36
Q

When the ventricles are relaxed and their pressure is low, which valves are open?

A

atrioventricular valves

37
Q

Which valves open when the ventricles contract and eject blood into the aorta and pulmonary trunk?

A

semilunar valves

38
Q

Which valves regulate the openings between the atria and ventricles?

A

atrioventricular

39
Q

One specific cause of arrhythmia is a failure of the cardiac conduction system to transmit signals, called what?

A

heart block

40
Q

Closing the aortic and pulmonary semilunar valves produces which heart sound?

A

second

41
Q

The mitral valve is also known as what?

A

left AV valve

42
Q

excitation in the cardiac conduction system leaves the AV node by way of what? also known as the bundle of His

A

AV Bundle

43
Q

Cardiac muscle relies on what process to produce ATP?

A

Aerobic respiration

44
Q

The QRS wave of an ECG represents what of the ventricular myocardium?

A

depolarization

45
Q

During which wave of an ECG does the atria depolarize?

A

P wave

46
Q

During which wave do ventricles repolarize on an ECG?

A

T wave

A&P internet cards (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions