Cardio Physio Flashcards Preview

Physiology > Cardio Physio > Flashcards

Flashcards in Cardio Physio Deck (35):
1

Beta adrenergic receptors in blood vessels

Alpha 1
Beta 2

2

Slowest blood flow in the circulatory system

Capillaries

3

Has largest percentage of blood in the circulatory system

Veins

thin walled under low pressure

4

Turbulent flow is associated with _____ reynolds number? Specifically?

High

5

Formula for pulse pressure

Systolic - Diastolic

6

Right atrial pressure also known as

Central venous pressure

7

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

Shear

8

Estimates left atrial pressure

Pulmonary Capillary Wedge Pressure

9

QRS complex represents ______

Ventricular depolarization

10

Which part of cardiac cycle is not seen in ECG

Atrial repolarization

11

T wave in ECG represents

Ventricular repolarization

12

Hypokalemia results to flat/tall T waves?

Flat T waves

HyperK+ >> Tall T waves

13

Hypercalcemia affects the QT interval duration by _______

Shortened QT interval >> faster contraction

14

ST segment elevation is seen in

STEMI

15

q wave is seen in

STEMI

16

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

Na+ influx
Slow funny Na Channels (If channels)

17

Inhibition of pacemaking of other latent pacemakers by the SA node

Overdrive suppression

18

Which is responsible for setting the heart rate

rate of phase 4 depolarization

19

Which pacemaker has the slowest conduction velocity?

AV node

20

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

Bundle of His, Purkinje fibers and Ventricles

21

Blood ejected by the ventricle per heart beat?

Stroke volume

22

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

Isovolumic contraction

23

Incisura is seen in the ___________

isovolumic relaxation phase

24

Rapid ventricular filling is characterized by this heart sound

S3

25

Center responsible for regulation of HR and BP

Nucleus tractus solitarius in medulla

26

Carotid baroreceptors respond in this pressure range

50mmHg - 180 mmHg

27

The "last ditch stand"

CNS ischemic response

28

Normal net filtration

2ml/min

29

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

Bainbridge reflex

30

Most important mechanism for temperature regulation in the skin

Sympathetic

31

How many % of CO goes to the brain

14-15%

32

Triad of Cushing's reflex

Hypertension
Bradycardia
Apnea or irregular respirations

33

Where are the baroreceptors found

carotid sinus
aortic arch

34

Long term control of BP is via the

R-A-A System

35

Control conduits for blood flow

arterioles