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Body Fluids And Circulation Mcq
Quiz 14
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Q.1
Chordae tendineae are found in .. ... [ kerala 2010 ]
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a) Atria of heart
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b) Ventricles of heart
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c) Joints of legs
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d) Ventricles of brain
Explanation
chordae tendineae string like processes in the heart that attach the edges of the bicuspid and tricuspid valves to the walls of the ventricles, preventing them from being forced back into the atria when the ventricles contract. Answer : (b)
Q.2
Systole causes ... ... [ MPPMT 1995 ]
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a) Entry of blood into lungs
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b) Entry of blood into heart
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c) Exit of blood from heart
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d) Exit of blood from ventricles
Explanation
Systole, period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle (the sequence of events in a single heart beat). Systole causes the ejection of blood into the aorta and pulmonary trunk or exit of blood from ventricles Answer : (d)
Q.3
Heart beat is heard on left side as ..... [ AMU 1999 ]
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a) Aorta is on left side
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b) Heart is on left side
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c) Ventricles are on left side
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d) Left ventricle is on left side
Explanation
In humans, the heart is located between the lungs, in the middle compartment of the chest. But Ventricles are left side. The heartbeat (pulse) that we feel is caused y the contraction of the ventricles. Answer : (c)
Q.4
Identify correctly matched pairs Uremia - excessive amount of urea in blood Hyperglycemia - Excess glucose in blood Absence of factor VII - haemophilia X-linked disorder - Glycosuria ... ... [ BHU 2008 ]
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a) 1, 2, 3 correct
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b) 1, 2 correct
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c) 2, 4 correct
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d) 1, 3 correct
Explanation
Glycosuria or glucosuria: is the excretion of glucose into the urine. X-linked disorder: disease or disorder associated with genetic abnormalities on the X chromosomes. Examples are the muscular dystrophies and hemophilias. Answer : (a)
Q.5
The lymph differ from blood in having .... .. [ CBSE 2009 ]
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a) More RBC less WBC
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b) Less RBC more WBC
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c) No RBC less WBC
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d) No RBC more WBC
Explanation
The lymph contains plasma and lesser number of WBCs and platelets. Answer : (c)
Q.6
Which leucocytes secrete both heparin and histamine? [ Pb PMT 2005 ]
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a) Acidophils
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b) Monocytes
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c) Basophils
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d) Neutrophils
Explanation
Basophils: contain anticoagulant heparin, which prevents blood from clotting too quickly. They also contain the vasodilator histamine, which promotes blood flow to tissues Answer : (c)
Q.7
lymphocytes of lower vertebrates are produced in ... ... [ MPPMT 2004 ]
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a) Liver
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b) Spleen
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c) Bone marrow
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d) Vertebrae
Explanation
In many lower vertebrates lymphocytes are produced in liver. Answer : (a)
Q.8
Which one secretes anticoagulant? ... ... [ Manipal 2004 ]
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a) Mast cells
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b) Nerve cells
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c) Adipose cells
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d) Plasma cells
Explanation
A mast cell is a type of white blood cell, contains many granules rich in histamine and heparin. Answer : (a)
Q.9
Blood of which of the following is colourless ... ... [ Har PMT 2005 ]
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a) Earthworm
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b) Cockroach
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c) Leech
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d) Frog
Explanation
Cockroaches do not have red blood because they do not use hemoglobin to carry oxygen. They do not carry oxygen in their blood stream either. Answer : (b)
Q.10
Purkinje fibres arise from ... ... [ DPMT 2002 ]
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a) Apex of ventricles
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b) Middle of ventricles
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c) Anterior part of auricles
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d) Posterior part of auricles
Explanation
Purkinje fibres arise from middle of ventricles Answer : (b)
Q.11
Enteroheptic circulation is related to ... ... [ AMU 2002 ]
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a) Bile ducts
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b) Bile pigments
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c) Cholesterol
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d) Cholecystokinin
Explanation
Enterohepatic circulation refers to the circulation of biliary acids, bilirubin, drugs, or other substances from the liver to the bile, followed by entry into the small intestine Cholecystokinin: a hormone which is secreted by cells in the duodenum and stimulates the release of bile into the intestine and the secretion of enzymes by the pancreas Answer : (d)
Q.12
Erythrocyte maturing factor is ... ... [ AMU 2005 ]
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a) Folic acid
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b) Cyanocobalamin
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c) Vitamin B2
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d) Vitamin C
Explanation
Essential for the maturation of red blood cells are Vitamin B12 (cobalamin) and Vitamin B9 (Folic acid). vitamin c Answer : (a)
Q.13
carotid artery carries ... ... [ MPPMT 1995 ]
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a) Impure blood to brain
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b) Oxygenated blood to brain
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c) Impure blood to kidneys
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d) Oxygenated blood to heart
Explanation
The brain receives oxygenated blood from two sources: the internal carotid arteries, and the vertebral arteries Answer : (b)
Q.14
In human beings duration of cardiac cycle is ... ... [ BHU 2012 ]
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a) 0.08 second
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b) 0.8 second
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c) 0.5 second
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d) 8.0 second
Explanation
The duration of the cardiac cycle is the reciprocal of heart rate. Assuming a heart rate of 75 beats per minute, each cycle takes 0.8 seconds. Answer : (b)
Q.15
A person with blood group AB is .... [ MPPMT 1991 ]
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a) Homozygous
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b) Hemizygous
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c) Heterozygous
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d) Allelomorph
Explanation
When one of the inherited alleles is A and the other is B, the genotype is heterozygous and the blood type is AB. Answer : (c)
Q.16
Formation of blood corpuscles is known as ... ... [ AFMC 2005 ]
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a) Haemolysis
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b) Rouleaux
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c) Hematopoiesis
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d) Phagocytosis
Explanation
Hematopoiesis is a synonym of haemopoiesis. but they are different the difference between hematopoiesis and haemopoiesis is that hematopoiesis is the process by which blood cells are produced; hematogenesis while haemopoiesis is formation of new cellular components of the blood in myeloid or lymphatic tissue. Answer : (c)
Q.17
Absolute refractory period of heart is during ..... [ Pb PMT 1997 ]
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a) Contraction when the heart is in non-responding period
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b) expansion
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c) negative charge
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d) positive charge
Explanation
Absolute refractory period corresponds to depolarization and repolarization Absolute refractory period : is a period during which the cardiac muscle will not respond to any stimulus Answer : (a)
Q.18
Wall of blood capillary is formed of ... ... [ CBSE 1991 ]
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a) Haemocyte
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b) Parietal cells
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c) Endothelial cells
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d) Oxyntic cells
Explanation
Endothelium is a type of epithelium that lines the interior surface of blood vessels and lymphatic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. Answer : (c)
Q.19
Blood platelets produce ..... [ MPPMT 1996 ]
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a) Fibrinogen
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b) Thromboplastin
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c) Haemoglobin
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d) Calcium
Explanation
Blood platelets produce Thromboplastin Answer : (b)
Q.20
Pace maker is situated in heart .. .. [ MPPMT 1994 ]
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a) in the wall of right atrium
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b) On interauricular septum
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c) On interventricular septum
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d) In the wall of left atrium
Explanation
Sinoatrial (SA) node is natural pacemaker, located at the top of the heart's upper-right chamber (the right atrium). Answer : (a)
Q.21
The metal essential for haemoglobin formation is .. .....
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a) Mg++
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b) Na+
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c) Fe++
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d) Cu++
Explanation
Answer : (c)
Q.22
Largest erythrocyte in vertebrate measuring about 30µ in diameter are found in
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a) Elephant
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b) Horse
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c) Amphiuma
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d) Lion
Explanation
Amphibian RBCs are the largest among vertebrates. Smallest RBCs about 1.5 µm diameter in Musk deer. Answer : (c)
Q.23
Which blood vessel has the largest amount of urea? ... ... [ MPPMT 1997 ]
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a) renal vein
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b) Hepatic vain
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c) Hepatic portal vein
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d) Dorsal aorta
Explanation
Renal artery have largest amount of urea, but not given in option Hepatic veins are blood vessels which transport the liver'sdeoxygenated blood and blood which has been filtered by the liver to right atrium Hepatic portal vein carries blood and nutrients from the stomach, spleen, intestines and gall bladder to the liver The dorsal aorta are paired (left and right) embryological vessels which progress to form the descending aorta Answer : (b)
Q.24
Blood transfusion is possible between groups .. .. [ MPPMT 1991 ]
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a) Donor A and recipient O
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b) Donor B and recipient A
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c) Donor AB and recipient O
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d) Donor A and recipient AB
Explanation
Recipient group have Antibodies Anti A and Anti B thus , GroupA, Group B or Group AB cannot donate blood to Group O Recipient A have antibodies AntiB thus Group B can not donate Now Group AB have no antibodies thus Group A, Group B and Group O can donate Answer : (d)
Q.25
Squeezing of Leucocytes out from the capillary walls to fight foreign agents is known as ...
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a) Diapedesis
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b) Diapanse
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c) Diaphysis
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d) Diakinesis
Explanation
Squeezing of Leucocytes out from the capillary walls to fight foreign agents is known as Diapedesis Answer : (a)
Q.26
If vagus/ parasympathetic nerve to heart is cut, the heart beat will ... ... [ MPPMT 1997]
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a) Decrease
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b) Increase
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c) Remain normal
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d) Stop
Explanation
The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate. Answer : (b)
Q.27
Blood pressure in the mammalian aorta is maximum during: …[AIPMT 2015]
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a) Diastole of the right atrium
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b) Systole of the left atrium
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c) Diastole of the right ventricle
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d) Systole of the left ventricle
Explanation
Blood pressure in the mammalian aorta is maximum during systole of the left ventricle because the heart shrinks and pushes loads of blood into aorta Answer:(d)
Q.28
Which one of the following is correct? …[AIPMT 2015]
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a) Blood = Plasma + RBC + WBC + Platelets
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b) Plasma = Blood + Lymphocytes
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c) Serum = Blood + Fibrinogen
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d) Lymph = Plasma + RBC + WBC
Explanation
Answer:(a)
Q.29
Erythropoiesis starts in : …[AIPMT 2015]
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a) Red bone marrow
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b) Kidney
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c) Liver
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d) Spleen
Explanation
Erythropoiesis is the process which produces red blood cells this usually occurs within the red bone marrow. Answer:(a)
Q.30
Doctors use stethoscope to hear the sound; produced during each cardiac cycle. The second sound is heard when : [ ReAIPMT 2015]
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a) AV node receives signal from SA node
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b) AV valves open up
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c) Ventricular walls vibrate due to gushing of blood from atria
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d) Semilunar valves close down after the blood flows into vessels from ventricles
Explanation
Second sound Lubb S2, is caused by the closure of aortic and pulmonic valves (semilunar valve), marking the end of systole. Or Heart pumps blood from the chambers into the arteries. Answer:(d)
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