Brainscape's Knowledge GenomeTM

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


See full index

Veterinary Physiology > Cardiac Review > Flashcards

Cardiac Review Flashcards

1
Q

Cardiac muscle cells are connected via _________

A

intercalated disks

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

Extracellular ____ is essential for contraction of cardiac muscle

A

Ca2+

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

T/F: You cannot increase the force of contraction in cardiac cells by recruiting ore muscle fibers or by inducing tetany

A

TRUE

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

_______ is related to heart rate

A

Chronotropy

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

What is dromotropy?

A

conduction velocity

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

What is inotropy?

A

force

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

What is clinotropy?

A

rate (velocity) of contraction

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

What is lusitropy?

A

rate of relaxation

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

More blood volume is contained in the _____ than ______

A

veins
arteries

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

What has the highest cross-sectional area?

A

capillaries

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

If vascular resistance is in a series, then it is [additive/reduced]

A

additive

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

If vascular resistance is in parallel, then it is [additive/reduced]

A

reduced

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

What does Reynold’s number indicate?

A

turbulence

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

The [higher/lower] viscosity of a fluid, the more resistance it will have

A

lower

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

What is the definition of cardiac output

A

Q = P/V

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

What is preload?

A

ventricular wall stretch prior to contraction
- proportional to EDV

17
Q

What is afterload?

A

the forces that oppose the ventricular ejection of blood

18
Q

Preload is when the _____ valve closes

A

mitral

19
Q

Afterload is when the _____ opens

A

aortic

20
Q

What is isovolumentric contraction

A

AV valve is closed

21
Q

What is the mean pressure of the aorta?

A

100 mmHg

22
Q

Is diastole or systole longer?

A

diastole

23
Q

What is the windkessel effect?

A

the proximal large arterial vessels store approximately 50% of the left ventricular stroke volume during systole
elastic forces of the aortic wall propel this volume to the peripheral circulation during diastole

24
Q

What is the importance of intercalated discs, fascia adherens, and desmosomes?

A

discs: ensure that cardiac muscle functions as a single unit
adherens & desmosomes: transmit force from one cardiac muscle cell to another

25
Q

What is effective refractory period?

A

period during which the membrane is not sufficiently depolarized and sodium channels have no completely recovered
- non-conducted electrical response to stimulus

26
Q

What is relative refractory period?

A

requires a larger stimulus

27
Q

What are the 3rd and 4th heart sounds?

A

3rd: ventricular filling
4th: atrial filling

Veterinary Physiology (26 decks)

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