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Body Fluids And Circulation Mcq
Quiz 9
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Q.1
Heparin is ... ... [ Wardha 2002 ]
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a) Antibacterial
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b) Antiallergic
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c) Anticoagulant
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d) Blood diluter
Explanation
Heparin is a compound occurring in the liver and other tissues which inhibits blood coagulation Answer : (c)
Q.2
Blood group AB has ... ... [ CBSE 1991 ]
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a) No antigen
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b) No antibody
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c) Neither antigen nor antibody
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d) Both antigen and antibody
Explanation
Answer : (b)
Q.3
In ventricular systole, oxygenated blood is pumped into ... ... [ KCET 2003 ]
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a) Pulmonary artery and deoxygenated into artery
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b) Aorta and deoxygenated into pulmonary vein
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c) Pulmonary vein and deoxygenated into pulmonary artery
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d) Aorta and deoxygenated into pulmonary artery
Explanation
Ventricular systole the contraction, or period of contraction, of the heart, especially of the ventricles, during which blood is forced into the aorta and pulmonary artery. Answer : (d)
Q.4
In aquatic mammals ... ... [CPMT 1997 ]
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a) Heart will be small
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b) Heart will be large
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c) Lungs will be small
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d) Lungs will be large
Explanation
Answer : (b)
Q.5
SA node/pace maker helps in ... ... [ Odisha 2004 ]
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a) Initiation of heart beat
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b) Conduction of blood
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c) Opening of bicuspid valve
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d) Opening of tricuspid valve
Explanation
Answer : (a)
Q.6
Oval RBCs are found in ... ... [ Manipal 2005 ]
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a) Rat
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b) Human
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c) Bat
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d) Camel
Explanation
Red blood cells of camel are oval shape, because of such shape can circulate even in thick blood and can significantly expand during rehydration, therefore camel product it self for dehydration Answer : (d)
Q.7
Blood group A has ... .... [ KCET 1999 ]
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a) Antibody a on RBC
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b) Antibody a in plasma
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c) Antigen A on RBC
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d) Antigen A in plasma
Explanation
Answer : (c)
Q.8
Majority of CO2 produced by our body cells is transported to lungs .... ... [ CBSE 2005 ]
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a) Attached to haemoglobin
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b) Dissolved in blood
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c) As bicarbonates
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d) As carbonates
Explanation
About 70% of CO2 is transported as bicarbonate ions Answer : (c)
Q.9
In normal blood pressure of 120/80 mmHg the numerator represents ... ... [ MHTCET 2007]
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a) Diastolic pressure
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b) Systolic pressure
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c) Pulse pressure
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d) Cardiac index
Explanation
A normal systolic blood pressure is 120 or below Answer : (b)
Q.10
The first heart sound is ... .... [ HPPMT 2011]
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a) Lubb during closure of semilunar valves
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b) Dupp during closure of semilunar valves
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c) Lubb during closure of atrioventricular valves
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d) Dupp during closure of atrioventricular valves
Explanation
The S1 heart sound is caused by blood flow turbulence when mitral and tricuspid valves ( atrioventricular) close at the start of systole. Answer : (c)
Q.11
Which one function as enzyme in blood clotting .... ....
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a) Prothrombin
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b) Calcium
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c) Thrombin
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d) Fibrin
Explanation
Thrombin is the activated from of Coagulation Factor II ( prothrombin), which catalyzes the conversion of fibrinogen to fibrin Answer : (c)
Q.12
To obtain a standard ECG, a patient is connected to the machine by three electrodes ... ... [ DPMT 2011 ]
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a) One to each wrist and to the left ankle
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b) One to each ankle and to the left wrist
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c) One to each wrist and to the left chest region
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d) One to each ankle and to the left chest region
Explanation
Answer : (a)
Q.13
From which part of heart does the largest artery arise ... ...
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a) left ventricle
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b) right ventricle
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c) left atrium
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d) right atrium
Explanation
The largest artery is the aorta, the main high-pressure pipeline connected to the heart's left ventricle Answer : (a)
Q.14
In order for the blood to flow from right ventricle to left ventricle in mammalian heart, it must flow through ... ... [ DPMT 2010 ]
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a) Right ventricle, pulmonary arteries, lungs pulmonary veins, left atrium
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b) Right ventricle, pulmonary veins, lungs, pulmonary arteries, left atrium
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c) Right ventricle, right atrium, lungs, pulmonary veins, left atrium
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d) Right ventricle, systemic aorta, lungs, pulmonary veins, left atrium
Explanation
Answer : (a)
Q.15
Which of the following is not granulocytes .... ... [ BHU 1993 ]
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a) Basophils
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b) Erythrocytes
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c) Neutrophils
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d) Mast cells
Explanation
Granulocytes are also called polymorphonuclear leukocytes(PMN, PML, or PMNL) because of the varying shapes of the nucleus. Erythrocytes don’t have nucleus Answer : (b)
Q.16
Bundle of His passes stimulus of contraction to ... ... [ Guj CET 2008 ]
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a) AV node
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b) SA node
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c) Purkinje fibres
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d) Atrium
Explanation
Pathway of myogenic impulse conduction is SANode→AVNode→ Bundle of His → Purkinje fibres Answer : (c)
Q.17
What is true of leucocytes? ... .. [ AFMC 2007 ]
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a) They undergo diapedesis or squeeze through capillary walls
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b) Sudden fall in number indicates cancer
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c) produced in thymus
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d) Enucleate
Explanation
Leucocytes squeeze through fenestrations, and gaps in the capillary, and slowly pass the rest of their cell body. Sudden fall in number causes leukopenia, All white blood cells are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells. Enucleate means remove the nucleus from (a cell). Answer : (a)
Q.18
Pernicious anaemia is caused by ... ... [ Odisha 2006 ]
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a) Low RBC count
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b) Death of WBC
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c) Obstruction of RBC maturation
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d) Destruction of young RBC
Explanation
Pernicious anemia is a condition in which the body can't make enough healthy red blood cells because it doesn't have enough vitamin B12. Answer : (c)
Q.19
Which one contains minimum urea? [ RPMT 2005 ]
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a) Hepatic portal vein
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b) Hepatic vein
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c) Renal vein
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d) Dorsal aorta
Explanation
The renal veins are veins that drain the kidney. They connect the kidney to the inferior vena cava. They carry the blood filtered by the kidney. Kidney filters urea and other wastes Answer : (c)
Q.20
If nerves supplying heart are cut, the heart will ... [ CPMT 1992 ]
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a) Shrink
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b) Beat arhythmically
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c) Beat rhythmically
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d) Stop
Explanation
The heart is innervated by parasympathetic and sympathetic fibers. The medulla is the primary site in the brain for regulating sympathetic and parasympathetic outflow to the heart and blood vessels. So if nerves supply heart is cut then heart will beat randomly or arhythmically. Answer : (b)
Q.21
mammalian RBCs are enucleated so that ... ... [ Manipal 2005 ]
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a) Nucleus is nonessential for RBC
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b) RBCs cannot divide
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c) RBCs can carry Hb
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d) Nucleus does not show lethal effect
Explanation
The main function of the RBC's is to carry oxygen to all body tissues from the lung and the vise versa with the carbon dioxide. Hemoglobin is the protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs. Efficient gas transport requires red blood cells to pass through very narrow capillaries, and this constrains their size and thus mammalian RBCs are enucleated. Answer : (c)
Q.22
Q.R.S. is related to ... ... [ BHU 1997 ]
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a) Ventricular contraction
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b) Auricular contraction
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c) Cardiac cycle
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d) Auricular relaxation
Explanation
P-wave: Atrial contraction PR interval: Represents the time taken for excitation to spread from the sino-atrial (SA) node across the atrium and down to the ventricular muscle via the bundle of His. QRS: Ventricular contraction ST segment: Ventricular relaxation T-wave: Ventricular repolarisation. Answer : (d)
Q.23
Osmotic pressure is maintained by blood colloid .... .. [ WB 2007 ]
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a) Albumin
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b) Thrombin
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c) Fibrinogen
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d) Globulin
Explanation
Albumin main function is to regulate the Oncotic pressure (or colloid osmotic pressure) of blood Answer : (a)
Q.24
Blood group agglutinogen is ... .. [ CPMT 2009 ]
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a) Phosphoprotein
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b) Glycoprotein
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c) Haemoprotein
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d) Phospholipid
Explanation
Agglutinogen is an antigenic substance present in blood cells. agglutinogen - An erythrocyte (RBC) surface antigen (immunologically distinct, genetically determined glycoproteins) which may stimulate the production of a particular specific agglutinin (antibody) in individuals lacking that particular agglutinogen (antigen); e.g., the antigens involved in the ABO and Rh blood group Glycoproteins are important for white blood cell recognition, especially in mammals.which interact directly with antigens. Answer : (b)
Q.25
A vein possesses a large lumen because ... ... [ CBSE 1990 ]
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a) Tunica media and tunica externa from a single coat
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b) Tunica interna and tunica media form a single coat
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c) Tunica interna, tunica media and tunica externa are thin
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d) Tunica media is a thin coat
Explanation
Lumen is the inside space of a tubular structure. Veins are under low blood pressure and so only requirethin walls and an larger lumen to allow easy blood flow. They can generate mostof their movement of blood back to the heart via muscle contractions andautomatically closing valves Answer : (d)
Q.26
Cardiac output is ... ... [ WB 2012 ]
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a) 4 litres/minute
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b) 5.3 litres/ minute
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c) 6.3 litres/ minute
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d) 73. litres/ minute
Explanation
The amount of blood put out by the left ventricle of the heart in one contraction is called the stroke volume. The stroke volume and the heart rate determine the cardiac output. A normal adult has a cardiac output of 5 L/min; assuming a heart rate of 70 beats/min. Answer : (b)
Q.27
tooth extraction in a haemophilic person may cause death due to excessive bleeding because of ... ... [ MPPMT 1990 ]
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a) Absence of plasma factor required to convert prothrombin into thrombin
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b) Presence of plasma factor that causes haemorrhage
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c) Presence of plasma factor that prevents blood clotting
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d) Absence of plasma factor required for haemorrhage
Explanation
A protein ( factor VIII) that is essential to normal blood clotting and is lacking or deficient in persons having hemophilia. Answer : (a)
Q.28
Valve surrounding opening of coronary sinus is ... ... [ MHTCET 2010 ]
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a) Thebesius valve
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b) Eustachian valve
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c) Mitral valve
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d) Semilunar valve
Explanation
The valve of the coronary sinus is a semicircular fold of the lining membrane of the right atrium, at the orifice of the coronary sinus. It is situated at the base of the inferior vena cava. Known as Thebesius valve Answer : (a)
Q.29
Number of action potentials that can be generated by sinoatrial node is ... ... [ HPPMT 2012 ]
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a) 40 -50/min
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b) 60 -80/min
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c) 60 -100/min
0%
d) 100 -120/min
Explanation
The sinoatrial node (SAN) is a group of cells located in the wall of the right atrium of the heart. These cells have the ability to spontaneously produce an electrical impulse, that travels through the heart via the electrical conduction system causing it to contract. SA node: 60–100 bpm Atrial foci: 60–80 bpm Junctional foci: 40–60 bpm Ventricular foci: 20–40 bpm The potentials will normally travel in order SA node → atrial foci → junctional foci → ventricular foci Answer : (c)
Q.30
Haemoglobin value for a healthy adult male is ... ... [ MHTCET 2009 ]
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a) 10g/100 ml
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b) 11 g/100ml
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c) 12g/100 ml
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d) 14-15 g/100ml
Explanation
The normal range for hemoglobin is: For men, 13.5 to 17.5 grams /100 ml. For women, 12.0 to 15.5 grams /100 ml. Answer : (d)
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