CVS

Question 1

Sympathtic nerve supply from

Answer 1

Lateral horn of T1 to T5 segments of spinal cord

Question 2

Hearts is also referred as

Answer 2

Pump

Question 3

Right vagus nerve supply

Answer 3

Sino atrial nerve

Question 4

Left vagus supply

Answer 4

Atrioventricular nerve

Question 5

Hearts pumps

Answer 5

70 beats per minute

Question 6

Muscle of heart

Answer 6

Cardiac

Question 7

Specialized area in cardiac muscle

Answer 7

Intercalated discs

Question 8

Gap junctions act as

Answer 8

Low resistant bridges

Question 9

What is excitability

Answer 9

The ability of a tissue to respond to a stimulus

Question 10

RMP in excitability

Answer 10

-90mV

Question 11

What ia phase 4 of ionic basis of excitability

Answer 11

Restoration of RMP is due to Na K ATPase pump

Question 12

What is autorhythmicity

Answer 12

Ability of tissue to generate its own impulse at regular intervals

Question 13

Ability of tissue to contract and generate firce

Answer 13

Contractility

Question 14

Contractile phase is

Answer 14

Systole

Question 15

Relaxation phase is

Answer 15

Diastole

Question 16

Muscle fails to respond to second stimulus

Answer 16

Long refractory period

Question 17

Two types of refractory period

Answer 17

Absolute and relative

Question 18

Increase in heart rate

Answer 18

Decreases the duration of cardiac cycle

Question 19

What does atrium do during the major part of the cardiac cycle

Answer 19

Relax

Question 20

How much seconds for atrial systole

Answer 20

0.1

Question 21

Seconds for atrial diastole

Answer 21

0.7

Question 22

Time of ventricular systole and ventricular diastole

Answer 22

0. 3

0. 5

Question 23

Steps in isovolumetric contraction

Answer 23

A V valve close
First heart sound
Ventricle contract as closed cavity
Volume of ventricle doesn’t change
Interventricular pressure increases

Question 24

In which step of ventricular systole does the semi lunar valve is open

Answer 24

Rapid ejection

Question 25

Steps in Protodiastole

Answer 25

``` Ventricle relax  semi lunar valves are still open  AV valves closed Iso volumetric pressure decreases blood tries to come back semi lunar valve close second heart sound ```

Question 26

In which step does isovolumetric pressure decreases below atrial pressure

Answer 26

Isovolumetric relaxation

Question 27

Steps in rapid filling

Answer 27

AV valves open sudden rush of blood turbulence produces third heart sound

Question 28

Slow filling is also called

Answer 28

Diastasis

Question 29

Steps in slow filling

Answer 29

Both atria and ventricles relaxes AV valves are still open passive filling of ventricle

Question 30

Atrial systole forces the blood to ventricles in which step

Answer 30

Final rapid filling

Question 31

What is end diastole volume

Answer 31

120

Question 32

Stroke volume

Answer 32

70

Question 33

What is electrocardio gram

Answer 33

Recording of the electrical changes that occur in the myocardium during a cardiac cycle

Question 34

Death of myocardium is known as

Answer 34

Myocardial infarction

Question 35

Volume of blood pumped out per ventricle per minute

Answer 35

Cardiac output

Question 36

What is the average of heartbeat

Answer 36

60 to 90 bpm

Question 37

The factors which affects of volume

Answer 37

Venous return peripheral resistance myocardial contractility

Question 38

What is blood pressure

Answer 38

The lateral pressure exerted by a moving column of blood on the walls of blood vessels

Question 39

What is systolic blood pressure

Answer 39

The pressure or the maximum pressure recorded in the arteries during ventricular systole 100-140

Question 40

Mean arterial blood pressure

Answer 40

The pressure required to drive the blood to vital organs or the mean pressure exerted in the arterial compartment during a cardiac cycle

Question 41

Why is mean arterial blood pressure important

Answer 41

Because it determines the volume of blood flow through an organ or tissue

Question 42

Factors that affect cardiac output

Answer 42

``` Heart regulation nerve supply chemical regulators hormone and higher centres ```

Question 43

Factors affecting stroke volume

Answer 43

Peripheral resistance myocardial contractility venous return

Question 44

Which is the seat of maximum peripheral resistance

Answer 44

Arterioles

Question 45

Stimulation of sympathetic nerve to arterioles results in

Answer 45

Vasoconstriction

Question 46

Which receptor mechanisms inhibits cardiac inhibitory center

Answer 46

Chemo

Question 47

Chemoreceptor mechanisms are present in

Answer 47

Carotid bodies and Aortic bodies

Question 48

Which mechanism starts to act when the pressure is below 60

Answer 48

Chemo

Question 49

Stimuli for chemo receptor mechanism

Answer 49

Decreased PO2 | increased H+ ion concentration increased PCO2

Question 50

Increased PCO2 in the brain is because of

Answer 50

CNS ischemic response

Question 51

CNS ischemic response has direct stimulation on

Answer 51

VMC