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Quiz 5
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Mitral valve in mammals guards the opening between:
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Right atrium and right ventricle
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Left atrium and left ventricle
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Right atrium and ventricle
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Left atrium and right ventricle
Tricuspid valve is present between
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Right atrium and right ventricle
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The two atria
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The two ventricles
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Left atrium and left ventricle
Which of the following has the thickest walls?
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Right ventricle
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Left ventricle
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Right auricle
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Left auricle
The pacemaker of heart is
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AV node
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SA node
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SV node
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Tricuspid valve
Contraction of right ventricle pumps blood into
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Dorsal aorta
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Pulmonary artery
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Pulmonary vein
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Coronary artery
The impulse of heartbeat originates from
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SA node
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Vagus nerve
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AV node
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Cardiac nerve
The heart of a healthy man beats normally per minute
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85-90 times
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80-90 times
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70-80 times
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60-70 times
Systole causes
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Entry of blood into lungs
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Entry of blood into heart
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Exit of blood from heart
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Exit of blood from ventricles
Typical ‘lubb-dupp’ sounds heard during heartbeat are due to
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Closing of bicuspid and tricuspid valves
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Closing of semilunar valves
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Blood under pressure through aorta
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Closure of bicuspid-tricuspid valves followed by semilunar valves
The instrument used to hear sound is;
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Electrocardiograph
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Sphygmomanometer
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Stethoscope
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Haemometer
In adult man, normal BP is:
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100/80 mm Hg
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120/80 mm Hg
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100/120 mm Hg
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80/120 mm Hg
The instrument by which BP of man is determined:
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Ultrasound
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BP meter
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Stethoscope
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Sphygmomanometer
William Harvey is known for discovery of
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Blood circulation
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Blood clotting
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Respiration
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Digestion
Mammals are said to have double circulation, it means
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Blood vessels are paired
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There are two types of blood vessels attached to every organ
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There are two systems, one from the heart to the lungs and back to the rest of the body
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The blood circulates twice through the heart
In mammals, veins differs from arteries in having
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Thicker walls
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Deeply present
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Carry blood away from heart
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internal valves
Oxygenated blood returns from lungs to the heat through
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Coronary vein
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Pulmonary vein
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Coronary vein
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Pulmonary artery
How many molecules of \(\text{C}_2\) can associate with a molecule of hemoglobin in man?
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One
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Two
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Three
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Four
Hemoglobin is having maximum affinity with
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$\text{NH}_3$
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$\text{O}_2$
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$\text{CO}$
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$\text{CO}_2$
In Which from $CO_2$ is carried by blood
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Sodium bicarbonate
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Sodium carbonate
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Potassium carbonate
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Magnesium carbonate
Amount of oxygen which is transported by one gram hemoglobin is
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20 ml
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13.4 ml
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1.34 ml
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None of these
Mountain sickness result due to
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Anemic hypoxia
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Arterial hypoxia
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Lack of sufficient Hb
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Lack of sufficient RBCs
Heart with single circulation is found in
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Mammals land birds
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Reptiles
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Fishes and amphibians
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Fishes only
The blood pressure is measured by
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Electrocardiogram (ECG)
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Stethoscope
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Sphygmomanometer
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Pulse rate
Chemical basis of action of herve on heart beat was discovered by
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Otto Loewi
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Pavlov
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Harvey
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Landsteiner
Erythrocytes of adult rabbit and other mammals are formed in
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Kidney
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Liver
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Spleen
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Bone marrow
The blood vascular of mammals is known as the double vascular system because
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A group of veins carry oxygenated blood and other group conducts deoxygenated blood
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Oxygenated blood runs from heart to different organs by one set of veins, while deoxygenated blood runs from heart to lungs by another set
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Two different blood runs never meet
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All of these
Which of the following is helpful for erythropoietin
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$\text{Fe}^{++}$
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$\text{Mg}^{++}$
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$\text{Ca}^{++}$
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$\text{Cu}^{++}$
Heart beat originates from
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Left atrium
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Right ventricle
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Pacemaker
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Cardiac muscles
Cardiac cycle in man takes about
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0.5 seconds
0%
1.0 seconds
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1.2 seconds
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0.8 seconds
Where are red blood cells formed?
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Spleen
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Liver
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Redbone marrow of short bones
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Thyroid
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