Physiology

Question 1

Lyme disease causes?

Answer 1

3rd degree heart block

Question 2

Patients with ————- appear significantly more likely to have Brugada.

Answer 2

schizophrenia

Question 3

Third-degree heart block and mobitz type two are treated by

Answer 3

Pacemaker

Question 4

Where can we indicate u wave?

Answer 4

Hypokalemia and bradycardia

Question 5

BBB in one bundle is asymptomatic T/ F

Answer 5

True

Question 6

What are the causes of BBB?

Answer 6

• Often caused by slowly progressive fibrosis/sclerosis
• More common in older patients
• Can result from “structural heart disease”
• LBBB: Prior MI, cardiomyopathy
RBBB: Right heart failure

Question 7

What does furosemide do?

Answer 7

Decreases body fluid

Question 8

Na nitroprusside is a:

Answer 8

Vasodilator

Question 9

What does lusitropy mean?

Answer 9

Relaxation of cardiac muscle

Question 10

Lusitropy is mediated by

Answer 10

Serca

Question 11

When does the perfusion of heart happen?

Answer 11

During diastole

Question 12

What are the baroreceptors?

Answer 12

Carotid sinus
Aortic arch

Question 13

Carotid sinus receptor can sense both hyper and hypo blood pressure
T/ F

Answer 13

T

Question 14

Carotid sinus nerve is :

Answer 14

Hering’s
XI

Question 15

Constriction of veins on receptor

Answer 15

A1

Question 16

In hypertension we stimulate Nervous System

In hypotension we stimulate Nervous System

Answer 16

Parasympathetic
Sympathetic

Question 17

Baroreceptors are blood pressure sensors via

Answer 17

Stretch

Question 18

Central chemoreceptors exist in :

Answer 18

Medulla

Question 19

Which blood vessle contain the least O2 concentren in body?

Answer 19

coronary sinus

Question 20

Nervous input has very important role on coronary blood flow
T/F

Answer 20

Nervous input has very little role on coronary blood flow.

Question 21

NO is synthesized from
By

Answer 21

Arginine
By NO synthase

Question 22

No is synthesized by

Answer 22

Endothelial cells

Question 23

No is Synthesized by endothelial cells and causes vascular smooth muscle relaxation by a guanylate cyclase-mediated cGMP second messenger system.

Answer 23

True

Question 24

Acetylcholine, bradykinin and shear stress will cause

Answer 24

Vasodilation

Question 25

Ca will increase the activity of NOsynthase
T/F

Answer 25

T

Question 26

Hypoxia in lungs causes vasodilation
T/F

Answer 26

Vasoconstriction

Question 27

Where do we see v wave

Answer 27

In mitral regurgitation

Question 28

How to diagnose AR on aortic pressure curve?

Answer 28

1-Absence of diacritic notch.
2- Steep diastolic decline on the curve.
3- High peak of aortic pressure + wide pulse pressure.

Question 29

A wave is absent in:

Answer 29

Atrial fibrillation

Question 30

Cannon a wave is seen in:

Answer 30

Complete heat block

Question 31

X descent is absent in:

Answer 31

Tricuspid regurgitation

Question 32

In v wave atrial pressure is increased due to:

Answer 32

Filling

Question 33

Giant v wave is seen in:

Answer 33

Tricuspid regurgitation

Question 34

•Rapid deep descent in y-descent

Answer 34

in constrictive pericarditis.

Question 35

Harsh sounding murmur

Answer 35

VSD

Question 36

most frequent valvular lesion

Answer 36

Mitral valve prolapse

Question 37

Caused by myxomatous degeneration?

Answer 37

MVP

Question 38

Murmur best heard when patient sits up and leans forward?

Answer 38

AR

Question 39

Alveolar hemorrhage is seen in

Answer 39

MS

Question 40

Mitral stenosis causes left sided heart failure
T/F?

Answer 40

False
Right

Question 41

ANP acts via

Answer 41

cGMP

Question 42

PCWP is measured by

Answer 42

Swan ganz catheter

Question 43

How does venous thrombosis cause edema?

Answer 43

By increasing hydrostatic pressure