Cardio Physio

Question 1

Beta adrenergic receptors in blood vessels

Answer 1

Alpha 1

Beta 2

Question 2

Slowest blood flow in the circulatory system

Answer 2

Capillaries

Question 3

Has largest percentage of blood in the circulatory system

Answer 3

Veins

thin walled under low pressure

Question 4

Turbulent flow is associated with _____ reynolds number? Specifically?

Answer 4

High

Question 5

Formula for pulse pressure

Answer 5

Systolic - Diastolic

Question 6

Right atrial pressure also known as

Answer 6

Central venous pressure

Question 7

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

Answer 7

Shear

Question 8

Estimates left atrial pressure

Answer 8

Pulmonary Capillary Wedge Pressure

Question 9

QRS complex represents ______

Answer 9

Ventricular depolarization

Question 10

Which part of cardiac cycle is not seen in ECG

Answer 10

Atrial repolarization

Question 11

T wave in ECG represents

Answer 11

Ventricular repolarization

Question 12

Hypokalemia results to flat/tall T waves?

Answer 12

Flat T waves

HyperK+&raquo_space; Tall T waves

Question 13

Hypercalcemia affects the QT interval duration by _______

Answer 13

Shortened QT interval&raquo_space; faster contraction

Question 14

ST segment elevation is seen in

Answer 14

STEMI

Question 15

q wave is seen in

Answer 15

STEMI

Question 16

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

Answer 16

Na+ influx

Slow funny Na Channels (If channels)

Question 17

Inhibition of pacemaking of other latent pacemakers by the SA node

Answer 17

Overdrive suppression

Question 18

Which is responsible for setting the heart rate

Answer 18

rate of phase 4 depolarization

Question 19

Which pacemaker has the slowest conduction velocity?

Answer 19

AV node

Question 20

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

Answer 20

Bundle of His, Purkinje fibers and Ventricles

Question 21

Blood ejected by the ventricle per heart beat?

Answer 21

Stroke volume

Question 22

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

Answer 22

Isovolumic contraction

Question 23

Incisura is seen in the ___________

Answer 23

isovolumic relaxation phase

Question 24

Rapid ventricular filling is characterized by this heart sound

Answer 24

S3

Question 25

Center responsible for regulation of HR and BP

Answer 25

Nucleus tractus solitarius in medulla

Question 26

Carotid baroreceptors respond in this pressure range

Answer 26

50mmHg - 180 mmHg

Question 27

The "last ditch stand"

Answer 27

CNS ischemic response

Question 28

Normal net filtration

Answer 28

2ml/min

Question 29

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

Answer 29

Bainbridge reflex

Question 30

Most important mechanism for temperature regulation in the skin

Answer 30

Sympathetic

Question 31

How many % of CO goes to the brain

Answer 31

14-15%

Question 32

Triad of Cushing's reflex

Answer 32

Hypertension Bradycardia Apnea or irregular respirations

Question 33

Where are the baroreceptors found

Answer 33

carotid sinus | aortic arch

Question 34

Long term control of BP is via the

Answer 34

R-A-A System

Question 35

Control conduits for blood flow

Answer 35

arterioles