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Class 11 Biology
Body Fluids And Circulation
Quiz 1
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In developing embryo RBCs are formed in
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Lymph node
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Bone marrow
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Liver
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Spleen
Explanation
Liver
In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
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Pressure difference between the post caval and atrium
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Pushing open of the venous valves
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Suction pull
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Stimulation of the sino auricular node
Explanation
Pressure difference between the post caval and atrium
When body tissues are injured resulting in the loss of blood, the process of blood clot begins and the blood platelets release
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Fibrinogen
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Thrombin
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Prothrombin
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Thromboplastin
Explanation
Thromboplastin
An adult human has systolic and diastolic pressures as:
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80 mm Hg and 120 mm Hg
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120 mm Hg and 80 mm Hg
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50 mm Hg and 80 mm Hg
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80 mm Hg and 80 mm Hg
Explanation
120 mm Hg and 80 mm Hg
Duration of cardiac cycle is
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0. 7 sec
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0. 9 sec
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0. 8 sec
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0. 11 sec
Explanation
0. 8 sec
In the above picture Q represents
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exitation of the atria
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depolarisation of ventricles
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begining of systole
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repolarisation
Explanation
begining of systole
Oxygenated blood occurs in
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Pulmonary artery
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Right atrium
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Right ventricle
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Pulmonary vein
Explanation
Pulmonary vein
The cells lining the blood vessels belong to the category of
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Columnar epithelium
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Connective tissue
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Smooth muscle tissue
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Squamous epithelium
Explanation
Squamous epithelium
Heart failure occurs due to
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heart stops beating
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damage of heart muscles
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congestion of lungs
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all of the above
Explanation
congestion of lungs
Artificial pace maker is transplanted in
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Inter auricular septum
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Below the collar bone
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Inter ventricular septum
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Right auricle
Explanation
Below the collar bone
Which of the following statement/statements can be related to erythroblastosis foetalis?
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Severe anemia and jaundice to the baby.
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Can be avoided by giving anti-Rh antibodies to mother immediately after delivery of the first child.
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Rh-antibodies from the Rh -ve mother destroys foetal RBCs.
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All of the above
Explanation
All of the above
Among the following stem cells, which are found in the umbilical cord?
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Cord blood stem cells
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Adult stem cells
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Embryonic stem cells
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All of the above
Explanation
Cord blood stem cells
If vagus nerve is cut the heart beat
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increases
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decreases
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will not be affected
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will stop immediately
Explanation
increases
If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?
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The flow of blood into the pulmonary artery will be reduced
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The flow of blood into the aorta will be slowed down
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The pacemaker will stop working
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The blood will tend to flow back into the left atrium
Explanation
The flow of blood into the pulmonary artery will be reduced
Heparin is
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Anti-allergic
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Blood diluter
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Anticoagulant
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Antiseptic
Explanation
Anticoagulant
Cardiac arrest is the state when
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heart stops beating
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inadequate blood supply to the heart
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heart not pumping enough to meet the body needs
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blood pressure increases
Explanation
heart stops beating
What is the normal blood pressure of human beings?
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110/70
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120/70
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120/80
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110/80
Explanation
120/80
Arteries are best defined as the vessels which
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Carry blood from one visceral organ to another visceral organ
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Supply oxygenated blood to the different organs
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Carry blood away from the heart to different organs
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Break up into capillaries which reunite to form a vein
Explanation
Carry blood away from the heart to different organs
Christmas disease is also known as
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Haemophilia B
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AIDS
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Haemophilia A
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Haemolytic jaundice
Explanation
Haemophilia B
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