Brainscape's Knowledge GenomeTM

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


See full index

Structure And Function III > Questions Derived From BRS PHYS > Flashcards

Questions Derived From BRS PHYS Flashcards

1
Q

Left sided cardiac output

A

Systemic

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

Site of highest resistance in the cardiovascular system

A

Arterioles

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

Arteriolar resistance is regulated by?

A

Autonomic nervous system

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

Alpha-adrenergic receptors are found on arterioles of

A

Skin, splanchnic, and renal circulations

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

Beta-adrenergic receptors are found in the arterioles of

A

Skeletal muscles

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

Veins have what type of adrenergic receptors

A

Alpha

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

Stressed volume of blood is found in the

A

Arteries

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

Unstressed vol of blood is found in the

A

Veins

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

Mean arterial pressure - right atrial pressure
____________________________________________. =

Total peripheral pressure

A

Cardiac output

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

Represents atrial depolarization

Does not include atrial repolarization

A

P wave

Atrial repolarization is buried in the qrs

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

Interval from beginning of p wave to the beginning of q wave

Initial depolarization of the ventricle

A

PR interval

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

PR interval depends on the conduction velocity through

A

The atrioventricular node (AV node)

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

If AV nodal conduction decreases (I.e; heart block) PR interval

A

Increass

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

PR interval is decreased by stimulation of the ___ Nervous system

A

Sympathetic

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

PR interval is increased by stimulation of the ____ nervous system

A

Parasympathetic

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

Represents the depolarization of the ventricles

A

QRS complex

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

Represents the entire period of the depolarization and repolarization of the ventricles

A

QT interval

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

Isoelectric

Represents the period when the ventricles are depolarized

A

ST segment

19
Q

Represents ventricular repolarization

A

T wave

20
Q

Upstroke in action potential.
Caused by transient increase in Na conductance
Depolarizs membrane

A

Phase 0

21
Q

SA Node > _____ > His - purkinje

Conduction speed

A

AV node

22
Q

Ionic basis for phase 0 in SA node

A

Calcium

In the ventricles, atria, and purkinje phase 0 zero is from Na

23
Q

The funny current is caused by an increase in Na conductance which results in an inward Na current. It is turned on by ?

A

Repolarization of the action potential during the preceeding ap.

24
Q

_____ effects produce changes in conduction velocity, primarily at the AV node

A

Dromotropic effect

25
Q

Produce changes in heart rate

A

Chronotropic effect

26
Q

Positive chronotropic effect:

A

Increases heart rate by increasing the firing rate of the SA node

27
Q

Negative chronotropic effect does what

A

Decreases HR by decreasing firing rate of SA node

28
Q

The intrinsic ability of cardiac muscle to develop force at a given muscle lenghter

A

Contractibility (inotropy)

Is related to the intracellular calcium concentration

29
Q

Factors that increase contractility

A

Increased heart rate

Sympathetic stimulation via beta-1 receptors

Cardiac glycosides (digitalis)

30
Q

Factors that decrease contractility

A

Parasympathetic stimulation (acetylcholine) via muscarinic receptors

31
Q

Increases in end-diastolic volume (volume in right atria) cause an increase in ventricular fiber length, which produces an increase in developed tension

A

Frank-starling relationship

32
Q

Increase in aortic pressure
Decreased stroke volume
Decreased width of pressure volume loop
Due to

A

Increased afterload

33
Q

When an artery is added in parallel, the total resistance ________

A

Decreases

34
Q

Compliance is much greater for _____ than for ______

A

Veins

Arteries

35
Q

Mean systemic pressure: is ________ by an increase in blood volume or by a decrease in venous capacitance

A

Increased

36
Q

A mean systemic pressure is ______ by a decrease in blood volume or by an increase in venous capacitance

A

Increase

37
Q

The slope of the venous return curve (V return/ atrial pressure) is determined by?

A

Resistance of the arterioles

38
Q

A clockwise rotation of the venous return curve indicates a

A

Decrease in total peripheral resistance

39
Q

A counterclockwise rotation of the venous return curve indicates

A

An increase in the total peripheral resistance

40
Q

______ occurs when cardiac output equals venous return

A

Equilibrium

41
Q

Increasing total peripheral resistance causes a ______ in cardiac output and a ________ in venous return

A

Decrease

Decrease

42
Q

Decreasing TPR causes _______ in both cardiac output and venous return

A

Increases

43
Q

What is pulse pressure?

A

Systolic pressure - diastolic pressure

Structure And Function III (24 decks)

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