Auriculo-ventricular node that provides impulse for heart beat
Sinu-aurical node that provides impulse for heart beat
Q.7.
The cells involved in inflammatory reactions are
Eosinophils
Basophils
Neutrophils
Lymphocytes
Q.8.
How do parasympathetic neural signals affect the working of the heart?
Reduce both heart rate & cardiac output
Heart rate is increased without affecting cardiac output
Both the heart rate & cardiac output increase
Heart rate decreases but cardiac output increases
Q.9.
Heart is covered by
peritoneum
placenta
pleural membrane
pericardium
Q.10.
Electrocardiogram is a measure of –
Heart rate
Ventricular contraction
Volume of blood pumped
Electrical activity of heart
Q.11.
Which among the following is correct during each cardiac cycle?
The volume of blood pumped out by the Rt and Lt ventricles is same.
The volume of blood pumped out by the Rt and Lt ventricles is different
The volume of blood received by each atrium is different
The volume of blood received by the aorta and pulmonary artery is different
Q.12.
Person with blood group AB is considered as universal recipient because he has
Both A & B antigens on RBC but no antibodies in the plasma
Both A & B antibodies in the plasma
No antigen on RBC & no antibody in the plasma
Both A & B antigens in the plasma but no antibodies
Q.13.
Which one engulfs pathogens rapidly
neutrophils
monocytes
basophil
Both A & B
Q.14.
A specialised nodal tissue embedded in the lower corner of the right atrium, close to Atrio-ventricular septum, delays the spreading of impulses to heart apex for about 0.1 sec. This delay allows
the atria to empty completely.
blood to enter aorta.
the ventricles to empty completely.
blood to enter pulmonary arteries.
Q.15.
How is blood pressure created
force of blood against artery wall
force of blood in the heart
force of blood in the lungs
force of blood in the goodwin
Q.16.
How does the lymphatic system help maintain homeostasis?
It returns lost fluids to the circulatory system to maintain blood volume and pressure
It pumps blood throughout the body
It aids in gas exchange with the lungs
In moves the skeletal muscles
Q.17.
"Bundle of His" is a network of
Muscle fibres distributed throughout the heart walls
Muscle fibres found only on the ventricle wall
Nerve fibres distributed in ventricles
Nerve fibres found throughout the heart
Q.18.
Typical lub-dub sound heard in heart beat are due to
Closing of bicuspid and tricuspid valves followed by semilunar valves.
Closing of semilunar valves
Blood pressure through aorta
Closer of bicuspid valves
Q.19.
Fully mature human RBC has......
A Nucleus
No nucleus
Nucleus may or may not be present
None of the above
Q.20.
Valves are important in the heart because they...
Create the heart beat
Are vessels that carry blood
Prevent back flow as blood moves through the heart
House white blood cells
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