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Quiz 10
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Q.1
Which best describes a lymph node? [ Har PMT 2007 ]
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a) Any organ that is being attacked by pathogens
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b) A capsule in the lymph vessels that are filled with B cells and T cells
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c) A special kind of immune cell that is found in the lymph
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d) RBC
Explanation
The primary function of lymph nodes is the filtering of lymph to identify and fight infection. In order to do this, lymph nodes contain lymphocytes, a type of white blood cell, which includes B cells and T cells Answer : (b)
Q.2
The artery can be distinguished from the vein in having .... [ Pb. PMT 2007 ]
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a) Thick walls
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b) More blood cells
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c) More plasma
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d) Larger cavity
Explanation
Answer : (a)
Q.3
What is true ? ... ... [ BHU 1993]
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a) All veins carry deoxygenated blood
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b) All arteries carry oxygenated blood
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c) All veins except one carry oxygenated blood
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d) All arteries except one carry oxygenated blood
Explanation
Answer : (d)
Q.4
How many double circulations are normally completed by human heart in one minute? ... ... [ KCET 2006 ]
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a) Eight
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b) Sixteen
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c) Thirty six
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d) Seventy two
Explanation
Heart rate is the speed of the heartbeat measured by the number of contractions of the heart per minute. Now during each contraction oxygenated and de-oxygenated blood circulate once. Normal hart beat per minute is 72 Answer : (d)
Q.5
Louder sound of heart beat occurs during closure of .... ... [ Guj CET 2006 ]
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a) Tricuspid valve
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b) Auriculo-ventricular valves
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c) Mitral valve
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d) Semilunar valves
Explanation
Atrioventricular (AV) valve :The valve between the left atrium and left ventricle is the mitral (bicuspid) valve; the right AV valve is the tricuspid valve. When they close heard as dub or S2 sound which is louder Answer : (c)
Q.6
In purpura, the purple-blue patch is caused by thrombocytopenic change of haemoglobin to ... .. [ JIPMER 2003 ]
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a) Blue
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b) Yellow
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c) White
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d) Red-black
Explanation
Purpura is a condition of red or purple discolored spots on the skin that do not blanch on applying pressure. The spots are caused by bleeding underneath the skin usually secondary to vasculitis or dietary deficiency of vitamin C. Answer : (d)
Q.7
Rh factor was discovered by ... ... [ DPMT 2002 ]
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a) Harvey
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b) Landsteiner and Weiner
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c) Watson
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d) Landsteiner
Explanation
The rhesus(Rh) blood type named after the rhesus monkey was first discovered in 1937 by Karl Landsteiner and Alexander S. Wiener. Answer : (b)
Q.8
match the columns ... .. [ KCET 2000 ]
(a) Bicuspid valve
(p) Brain
(b) Nephron
(q) Liver
(c) Alveoli
(r) Heart
(d) Cerebrum
(s) Kidney
-- ---
(t) Lungs
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a) a - s, b - r, c - p, d - t
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b) a - r, b - t, c - s, d - p
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c) a - r, b - s, c - t, d - p
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d) a - s, b - q, c - p, d - t
Explanation
Answer : (c)
Q.9
Systole is contraction of ... ... [ BHU 2002 ]
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a) AV node
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b) SA node
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c) Major arteries
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d) Atria and ventricles
Explanation
Systole is the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries Answer : (d)
Q.10
Assertion: Person with blood group AB can take blood from any person Reason: Blood group AB has no antibody and thus antigen of other group is not affected ... .... [ AIIMS 2000 ]
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a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
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c) Assertion is true but, Reason is false
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d) Assertion is false but, Reason is true
Explanation
Answer : (a)
Q.11
Fewer elastic fibers are found in
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a) tunica media near heart
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b) tunica media away from heart
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c) arteries
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d) veins
Explanation
The tunica media, is the middle tunica (layer) of an artery or vein Answer : (d)
Q.12
Cardiac output is blood ... ... [ KCET 1996 ]
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a) Received by heart per minute
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b) Pumped by ventricles per sec
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c) Pumped by each ventricle per minute
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d) Pumped by left ventricle per hour
Explanation
Cardiac output is a term used that describes the volume of blood being pumped by the heart, in particular by a left or right ventricle Answer : (c)
Q.13
Murmur occurs due to defect in ... ... [ Odisha 2003 ]
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a) Malpighian tubules and excretion
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b) Tracheae and respiration
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c) Heart and circulation
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d) None of the above
Explanation
A heart murmur is an unusual sound heard between heartbeats. Murmurs sometimes sound like a whooshing or swishing noise. Abnormal heart murmurs in adults are related to defective heart valves Answer : (c)
Q.14
Oxygenated blood from lungs enters heart through ... ... [ JIPMER 2002 ]
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a) Pulmonary vein
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b) Pulmonary artery
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c) Coronary system
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d) Coronary vein
Explanation
Answer : (a)
Q.15
Heparin is connected with ... ... [ CPMT 1994 ]
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a) Coagulation
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b) Prevention of blood coagulation
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c) Dilution of blood
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d) Buffering of blood
Explanation
Answer : (b)
Q.16
Hardening of arteries due to deposition of cholesterol is ... .... [ MHTCET 2010 ]
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a) Atherosclerosis
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b) Thrombosis
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c) Stenosis
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d) Rhinitis
Explanation
Atherosclerosis a disease of the arteries characterized by the deposition of cholesterol on their inner walls. Thrombosis local coagulation or clotting of the blood in a part of the circulatory system. Stenosis the abnormal narrowing of a passage in the body. Rhinitis inflammation of the mucous membrane of the nose, caused by a virus infection (e.g. the common cold) or by an allergic reaction Answer : (a)
Q.17
Haemophilia is ... ... [ MPPMT 1990 ]
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a) Royal disease
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b) Faulty blood clotting
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c) Both A and B
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d) Mosquito having haemocoel
Explanation
Haemophilia is commonly called Royal disease Haemophilia a medical condition in which the ability of the blood to clot is severely reduced, Answer : (c)
Q.18
Oxygen carries in human blood is ... .. [CPMT 1992 ]
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a) Iron
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b) Methaemoglobin
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c) Haemoglobin
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d) haemocyanins
Explanation
Answer : (c)
Q.19
Which of the following pairs, the two terms represent the same thing? ... ... [ MPPMT 2004 ]
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a) Lymphocyte - leucocyte
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b) Plasma - serum
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c) Mitral valve - bicuspid valve
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d) Atrioventricular node - pacemaker
Explanation
Lymphocytes are a type of white blood cells while leukocytes are equivalently termed in general as white blood cells. Plasma is the part of the blood that contains both the serum and clotting factors. Sinuatrial node is present in right atria. it is called pacemaker because it generates impulese for beating of heart. Or pace maker Atrioventricular node is present in atrio-ventricular septum. it is called pacesetter because it regulates heart beats Answer : (c)
Q.20
In normal adult man B.P. is ... ... [CBSE 1998 ]
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a)00/80 mmHg
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b) 120/80 mmHg
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c) 100/120 mmHG
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d) 80/120 mmHg
Explanation
Answer : (b)
Q.21
How many times a red blood corpuscle will have to pass through the heart in its journey from hepatic artery? [ KCET 2005 ]
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a) Once
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b) Two times
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c) Four times
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d) Several times
Explanation
Blood circulate twice in heart. Answer : (b)
Q.22
Thromboplastin required for blood clotting at the place of injury is released by ... ... [ MHTCET 2009 ]
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a) Blood platelets
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b) Eosinophils
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c) Neutrophils
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d) Lymphocytes
Explanation
Blood platelets release thromboplastin required for blood clotting Eosinophil are implicated in numerous inflammatory processes, especially allergic disorders. Neutrophils are white blood cells that play some very important roles in our innate immune system. lymphocytes function to eliminate the antigen, either by releasing antibodies (in the case of B cells), cytotoxic granules (cytotoxic T cells) or by signaling to other cells of the immune system (helper T cells). Answer : (a)
Q.23
Choose the correct option : (i) Human heart is ectodermal in origin.(ii) Mitral valve guards the opening between right atrium and left ventricle.(iii) SAN is located on the right upper corner of right atrium.(iv) Stroke volume × Heart rate = Cardiac output. ..... ... [ kerala 2012 ]
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a) i alone is correct
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b) i and ii alone are correct
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c) ii and iii alone are correct
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d) iii and iv alone is correct
Explanation
Statement (i) wrong because The heart and blood vessels are derived from embryonic mesoderm germ-layer cells that differentiate after gastrulation into mesothelium, endothelium and myocardium. Mesothelial pericardium forms the outer lining of the heart. Statement (ii) wrong because The mitral valve, also known as the bicuspid valve or left atrioventricular valve, the opening between left atrium and left ventricle. Statement (iii) correct because The SA node consists of a cluster of cells that are situated in the upper part of the wall of the right atrium (the right upper chamber of the heart). Statement (iv) correctThe 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. Or Stroke volume × Heart rate = Cardiac output. Answer : (d)
Q.24
Volume of blood each ventricle pumps out during a cardiac cycle is about ... ... [ keral 2011 ]
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a) 70 ml
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b) 51 ml
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c) 40 ml
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d) 1200 ml
Explanation
A normal adult has a cardiac output of 5 L/min; assuming a heart rate of 70 beats/min Thus volume of blood each ventrical pump during each cardiac cycle = 5000ml/70min= 71.43 ml approx 70 ml Answer : (a)
Q.25
Husband and wife should know their Rh factors because the situation can be serious due to biological incompatibility in one of the following cases .. ... [ AFMC 2001 ]
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a) Rh+ husband and Rh+ wife
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b) Rh- husband and Rh- wife
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c) Rh- husband and Rh+ wife
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d) Rh+ husband and Rh- wife
Explanation
Rh+ husband and Rh- wife baby will have Rh+ which causes hemolytic disease of the newborn, Answer : (d)
Q.26
Which one of the following minerals controls heart? .... ... [ RPMT 1996]
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a) Sulphur
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b) Sodium
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c) Iron
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d) Potassium
Explanation
Decreased sodium lowers blood volume, causing the blood pressure to drop and the heart rate to increase. Sodium increases raise blood volume and cause fluid to accumulate, forcing your heart to work harder Answer : (b)
Q.27
Vagus nerve slows down heart beat due to secretion of .... .. [ DPMT 2008]
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a) Adrenaline
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b) Acetylcholine
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c) Norepinephrine
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d) Dopamine
Explanation
The vagus, is the tenth cranial nerve or CN X, and interfaces with parasympathetic control of the heart, lungs and digestive tract. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate Answer : (b)
Q.28
A blood group with no antibodies but with both antigens is ... ... [ MPPMT 1996 ]
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a) O
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b) A
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c) B
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d) AB
Explanation
blood group, antibodies and antigens Answer : (d)
Q.29
AB blood group person has ... .... [ CPMT 1993]
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a) A and B antigens
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b) a and b antibody
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c) A antigen and antibody
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d) B antigen and a antibody
Explanation
Answer : (a)
Q.30
What is correct? [ MPPMT 1991 ]
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a) Rabbit has renal portal system only
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b) Frog has renal portal system only
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c) Rabbit has both renal and hepatic systems
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d) Frog has both renal and hepatic portal systems
Explanation
Hepatic portal system
Renal portal system
Origin
Different parts of the digestive system such as stomach, intestine, pancreas, spleen etc. and veins come from hind limb are united together and enters into liver and breaks into capillaries instead open to heart
The femoral and sciatic vein united together to form renal portal vein this vein open into kidney and breaks into capillaries
Destination
Liver
Kidney
Function
Absorbed food of alimentary canal and transport into liver. This food is differentiated into liver and sends them to the place of necessary and store the excess food
By the system filtration of metabolic waste and excretion of these materials of the blood by the kidney is done
Significance
The absorbed food is stored into liver not circulated meaning lastly into the body and food is distributed when in need
To separate the waste materials from the blood before entering the heart while brings into the kidney to filter and purify
The renal portal system is absent in the rabbit. Only Hepatic portal system is present in rabbit. A renal portal system is a portal venous system found in all living vertebrates except for hagfish, lampreys, and mammals. The portal system is defined as a system of blood vessels in which veins carrying blood from different parts of the body is first broken up into capillaries in another organ like kidney or liver then the blood is collected by another set of capillaries which unite to form another vein that carries blood to the heart. Answer : (d)
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