Human Heart has SA node which makes it–

(1) myogenic heart

(2) neurogenic heart

(3) Digenic Heart

(4) Rhinogenic Heart

The neurocenter for the activity of the Heart is located in

1. Pons

2. midbrain

3. medulla oblangata

4. cerebrum

Medulla Oblangata regulates the Cardiac activity via

(1) CNS

(2) ANS

(3) PNS

(4) CNS and PNS

The sympathetic nerves give _______ neural signals to heart and increases the _______.

(1) stimulatory, ventricular contraction

(2) inhibitory, stroke volume

(3) stimulatory, ventricular relaxation

(4) inhibitory, ventricular relaxation

If the strength of ventricular contraction increases then it will cause

(1) increase in Heart beat rate

(2) increase in cardiac output

(3) reduced supply of oxygen

(4) both (1) and (2)

What is the effect of parasympathetic neural signals on Heart Activity?

1. decreases the rate of heart beat

2. decreases the speed of conduction of action potential

3. decreases the cardiac output

4. all of these

Arteries have ________ layer of smooth muscles than ________

(1) thicker, vein

(2) thicker, aorta

(3) thinner, vein

(4) thinner, aorta

The hormonal regulation of Cardiac output is

(1) mediated by adrenal cortex

(2) mediated by adrenal medulla

(3) mediated by thyroid

(4) mediated by pineal

The normal blood pressure is _____ and if it gets increased, such disorder is called _____

(1) 120/80; hypertension

(2) 80/120; blood tension

(3) 120/80; high blood pressure

(4) both (1) and (3)

The pumping pressure of healthy heart is

(1) 120 mmHg

(2) 80 mmHg

(3) 140 mmHg

(4) 90 mmHg