Q. No.Which vessels bring blood to right atrium?
(1) Vena Cava and coronary sinus
(2) Pulmonary veins
(3) Pulmonary artery
(4) Aorta and pulmonary artery
(1) Vena Cava and coronary sinus
(2) Pulmonary veins
(3) Pulmonary artery
(4) Aorta and pulmonary artery
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
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) 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
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