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Physiology > Cardio Physio > Flashcards

Cardio Physio Flashcards

1
Q

Beta adrenergic receptors in blood vessels

A

Alpha 1

Beta 2

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2
Q

Slowest blood flow in the circulatory system

A

Capillaries

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3
Q

Has largest percentage of blood in the circulatory system

A

Veins

thin walled under low pressure

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4
Q

Turbulent flow is associated with _____ reynolds number? Specifically?

A

High

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5
Q

Formula for pulse pressure

A

Systolic - Diastolic

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6
Q

Right atrial pressure also known as

A

Central venous pressure

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7
Q

A strain in the structure of a substance produced by pressure when its layers are laterally shifted in relation to each other

A

Shear

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8
Q

Estimates left atrial pressure

A

Pulmonary Capillary Wedge Pressure

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9
Q

QRS complex represents ______

A

Ventricular depolarization

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10
Q

Which part of cardiac cycle is not seen in ECG

A

Atrial repolarization

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11
Q

T wave in ECG represents

A

Ventricular repolarization

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12
Q

Hypokalemia results to flat/tall T waves?

A

Flat T waves

HyperK+&raquo_space; Tall T waves

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13
Q

Hypercalcemia affects the QT interval duration by _______

A

Shortened QT interval&raquo_space; faster contraction

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14
Q

ST segment elevation is seen in

A

STEMI

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15
Q

q wave is seen in

A

STEMI

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16
Q

Phaase 4 of SA node action potential is due to _________ via the _______ channels

A

Na+ influx

Slow funny Na Channels (If channels)

17
Q

Inhibition of pacemaking of other latent pacemakers by the SA node

A

Overdrive suppression

18
Q

Which is responsible for setting the heart rate

A

rate of phase 4 depolarization

19
Q

Which pacemaker has the slowest conduction velocity?

A

AV node

20
Q

Which component of the conductive system has the fastest conduction velocity?

A

Bundle of His, Purkinje fibers and Ventricles

21
Q

Blood ejected by the ventricle per heart beat?

A

Stroke volume

22
Q

C wave and S1 is seen in _______ of the cardiac cycle

A

Isovolumic contraction

23
Q

Incisura is seen in the ___________

A

isovolumic relaxation phase

24
Q

Rapid ventricular filling is characterized by this heart sound

A

S3

25
Q

Center responsible for regulation of HR and BP

A

Nucleus tractus solitarius in medulla

26
Q

Carotid baroreceptors respond in this pressure range

A

50mmHg - 180 mmHg

27
Q

The “last ditch stand”

A

CNS ischemic response

28
Q

Normal net filtration

A

2ml/min

29
Q

Increased venous return increases the HR and CO is known as the _____

A

Bainbridge reflex

30
Q

Most important mechanism for temperature regulation in the skin

A

Sympathetic

31
Q

How many % of CO goes to the brain

A

14-15%

32
Q

Triad of Cushing’s reflex

A

Hypertension
Bradycardia
Apnea or irregular respirations

33
Q

Where are the baroreceptors found

A

carotid sinus

aortic arch

34
Q

Long term control of BP is via the

A

R-A-A System

35
Q

Control conduits for blood flow

A

arterioles

Physiology (10 decks)

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