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Quiz 13
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Q.1
mammalian erythrocytes have short life span due to absence of ... ... [ Bih PMT 1991 ]
0%
a) Endoplasmic reticulum
0%
b) Mitochondria
0%
c) Nucleus
0%
d) Golgi complex
Explanation
Mammalian erythrocytes have short life span due to absence of Mitochondria and Nucleus is absent in mammalian erythrocytes Answer : (c)
Q.2
Which one the first to receive lymphatic duct from lungs .... ...[ Guj CET 2007 ]
0%
a) Right lymphatic duct
0%
b) Thoracic lymphatic duct
0%
c) Left subclavian vein
0%
d) Right subclavian vein
Explanation
A lymphatic duct that drains the right head, neck, lung, and upper extremity and the convex surface of the liver Answer : (b)
Q.3
Haemoglobin first appears during development of RBC in ... ... [ WB2007]
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a) Reticulocyte
0%
b) Early normoblasts
0%
c) Intermediate normoblast
0%
d) Late normoblast
Explanation
Stages of erythropoiesis
Important event
Proerythroblasts
Nucleoli disappear
Intermediate normoblasts
Haemoglobin starts appearing
Early normoblasts
Nucleoli disappear
Late normoblasts
Nucleus disappears
Reticulocyte
Reticulum is formed. Cell enters capillary
Mature RBC
Reticulum disappears cell attains biconcavity
Answer : (c)
Q.4
Cell fragments of megakaryocytes yield .... .. [ MHTCET 2008 ]
0%
a) Erythrocytes
0%
b) Granulocytes
0%
c) Agranulocytes
0%
d) Blood platelets
Explanation
Answer : (d)
Q.5
Find the correct explanations about blood not clotting inside the vessels 1.Speedy flow prevents accumulation of fibrin threads if formed.Absence of anticoagulant heparin having antithrombin activity.3 Smoothness of endothelial lining preventing rupturing of platelets and formation of thromboplastin.4 Presence of a layer of negatively charged protein over the inner surface of endothelium that attracts clotting factors. ... .. [ BHU 2008 ]
0%
a) 1, 2, 3 correct
0%
b) 1, 2 correct
0%
c) 2, 4 correct
0%
d) 1, 3 correct
Explanation
Answer : (d)
Q.6
Oval depression or fossa is observed over ... ... [ kerala 2009 ]
0%
a) Inter-atrial septum
0%
b) Interventricular septum
0%
c) Right auriculo - ventricular septum
0%
d) Left auriculoventricular septum
Explanation
An oval depression on the lower part of the septum of the right atrium; it is a vestige of the foramen ovale, and its floor corresponds to the septum primum of the fetal heart. Answer : (a)
Q.7
A man with blood group A marries AB blood group woman. Which type of progeny indicate that the man is not homozygous? [ CBSE 1993 ]
0%
a) AB
0%
b) B
0%
c) A
0%
d) O
Explanation
Parent
I
A
I
A
or I
A
i (Man)
I
A
I
B
( mother)
Gametes
I
A
and i
I
A
and I
B
Progeny
I
A
I
A
(GroupA)or I
A
I
B
( GroupAB) or I
A
i(GroupA)and I
B
i (GropB)
If Man is homozygous then possible group would be only A and AB And group B would not be possible Thus if child is of group B then man is not homozygus Answer : (b)
Q.8
Neurogenic heart is characteristic of ... .... [ CBSE 1995 ]
0%
a) Humans
0%
b) Lower invertebrates
0%
c) Rat
0%
d) Rabbit
Explanation
Neurogenic heartLower invertebrates like crustaceans (example shrimp, crab, lobster) Answer : (b)
Q.9
First heart transplant was performed by .... [ MPPMT 1990 ]
0%
a) William Harvey
0%
b) Watson
0%
c) Christian Barnald
0%
d) Khorana
Explanation
On 3 December 1967, South African doctor, DrChristiaan (Chris) Barnard, performed the world's first human to human heart transplant at Groote Schuur Hospital, Cape Town. Answer : (c)
Q.10
Artery supplying blood to pericardium is ... .... [ EAMCET 2008]
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a) Brachial artery
0%
b) Vertebal artery
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c) Coronary artery
0%
d) Internal mammary artery
Explanation
Pericardium: The conical sac of fibrous tissue that surrounds the heart and the roots of the great blood vessels. The brachial artery: is the major blood vessel of the arm. The vertebral arteries: are major arteries of the neck Coronary artery: Supplies oxygenated blood to the walls of the ventricles and the atrium. Blood supply of the pericardium The visceral pericardium is supplied and drained by the coronary system The parietal and fibrous pericardium receive arterial blood from the following sources: Pericardiophrenic and musculophrenic branches of the internal thoracic artery Pericardial branches from Bronchial; Esophageal ;Superior phrenic arteries. Answer : (d)
Q.11
If heart sound recording and ECG are superimposed, the first heart sound would occur ... .... [ AMU 2009]
0%
a) At P-wave
0%
b) Just after P-wave
0%
c) Just before QRS complex
0%
d) Just after QRS complex
Explanation
QRS complex :It corresponds to the depolarization of the right and left ventricles of the human heart. Answer : (d)
Q.12
What is true ... ... [ MHTCET 2010 ]
0%
a) All arteries carry oxygenated blood
0%
b) All veins carry oxygenated blood
0%
c) All veins carry oxygenated blood except one
0%
d) All arteries carry oxygenated blood except one
Explanation
Answer : (d)
Q.13
Number of RBC/mm3 in healthy female is ... .... [ JKCMEE 1992 ]
0%
a) 4.5 - 5.0 million
0%
b) 5.5 - 6.0 million
0%
c) 3.5 - 4.0 million
0%
d) 6.5 - 7.0 million
Explanation
Red Blood Cell Count: 4.6-6.2 million per cubic millimeter in Men and 4.2-5.4 million per cubic millimeter in Women. Answer : (a)
Q.14
Which one regulate heart beat? .... [ MPPMT 1998 ]
0%
a) Purkinje fibres
0%
b) Cardiac branch of vagus nerve
0%
c) SA node
0%
d) AV node
Explanation
SA node is the pacemaker for the heart, but it in turn is controlled by the vagus nerve Answer : (b)
Q.15
Vitamin K is required for ... ... [ CPMT 1991]
0%
a) Blood clotting
0%
b) Respiration
0%
c) Carbohydrate metabolism
0%
d) Calcium phosphorus metabolism
Explanation
Vitamin K serves as an essential cofactor for a carboxylase that catalyzes carboxylation of glutamic acid residues on vitamin K-dependent proteins. The key vitamin K-dependent proteins includes Coagulation proteins: factors II (prothrombin), VII, IX and X. Answer : (a)
Q.16
Problem related to Rh factor arises when Rh+ and Rh- blood mix up ... ... [ CBSE 1999 ]
0%
a) In test tube
0%
b) Through transfusion
0%
c) Through pregnancy
0%
d) Both b and c
Explanation
Rh incompatibility, also known as Rh disease, is a condition that occurs when a Rh-negative blood type is exposed to Rh-positive blood cells, leading to the development of Rh antibodies. It can occur during blood transfusion and pregnancy. Answer : (d)
Q.17
ECG is employed for study of ... ... [ MHTCET 2008 ]
0%
a) Lung ailments
0%
b) Brain defects
0%
c) Heart problems
0%
d) Kidney defects
Explanation
Answer : (c)
Q.18
Artery is a vessel that carries blood ... .... [ Odisha 2009 ]
0%
a) Towards the heart
0%
b) Away from heart
0%
c) Away from tissue
0%
d) Towards the liver
Explanation
Answer : (b)
Q.19
Rh -ve person donated blood to Rh +ve person for second time. Then .. ... [ KCET 2007 ]
0%
a) Rh -ve blood starts reacting to Rh - VE blood
0%
b) Rh +ve person will die
0%
c) Rh -ve person will die
0%
d) Nothing happens to Rh-ve person
Explanation
Rh -ve person donated blood, so nothing will happen to doner, but Recipient will die Answer : (d)
Q.20
Important function of lymph is ... .... [ BHU 2008 ]
0%
a) transport oxygen to brain
0%
b) Transport CO2 to lungs
0%
c) Return RBCs to lymph nodes
0%
d) Return interstitial fluid to blood
Explanation
The lymphatic system has multiple interrelated functions: It is responsible for the removal of interstitial fluid from tissues. It absorbs and transports fatty acids and fats as chyle from the digestive system. It transports white blood cells to and from the lymph nodes into the bones Answer : (d)
Q.21
In extrinsic clotting pathway, which of the following factors gets activated ... ... [ AMU 2009 ]
0%
a) X and XI
0%
b) III and VII
0%
c) IX and XI
0%
d) XI and XII
Explanation
Answer : (b)
Q.22
Second heart sound is associated with the ... ... [ MPPMT 2011 ]
0%
a) Lub - closure of semilunar valves
0%
b) Lub - closure of tricuspid and bicuspid valves
0%
c) Dupp - closure of tricuspid and bicuspid valves
0%
d) Dupp - closure of semilunar valves
Explanation
The second heart sound (S2) is associated with closure of the semilunar valves (pulmonary and aortic valves), causing. The second heart sound (S2). Shorter and not as loud as the first sound. Answer : (d)
Q.23
In a typical heart, if EDV is 120ml and ESV is 50ml, the stroke volume (SV) is ... ... [ KCET 2011 ]
0%
a) 120 -50 = 70 ml
0%
b) 120 × 50 = 6000 ml
0%
c) 120 + 50 = 170 ml
0%
d) 120/50 = 2.4 ml
Explanation
End-diastolic volume (EDV) is the volume of blood in the right and/or left ventricle at end load or filling in (diastole) or the amount of blood in the ventricles just before systole. End-systolic volume (ESV) is the volume of blood in a ventricle at the end of contraction, or systole, and the beginning of filling, or diastole. ESV is the lowest volume of blood in the ventricle at any point in the cardiac cycle. Stroke volume (SV) is the volume of blood pumped from the left ventricle per beat. = EDV – ESV SV = 120 -50 = 70 ml Answer : (a) Answer : (a)
Q.24
Heart wall is made of ... .... [ MPPMT 1997 ]
0%
a) Myocardium
0%
b) Epicardium
0%
c) Endocardium
0%
d) All the above
Explanation
The heart wall is made of 3 layers: epicardium, myocardium and endocardium. Answer : (d)
Q.25
Blood vessel that supplies oxygenated blood to cardiac tissue is ... ... [ WB 2012 ]
0%
a) Coronary sinus
0%
b) Coronary vein
0%
c) Coronary artery
0%
d) Pulmonary artery
Explanation
These coronary arteries branch off into smaller arteries, which supply oxygen-rich blood to the entire heart muscle Answer : (c)
Q.26
Lymph is colorless because ... ... [ MPPMT 1999 ]
0%
a) WBC are absent
0%
b) WBC are present
0%
c) Haemoglobin is absent
0%
d) RBC are absent
Explanation
Lymph Composition. Lymph contains a variety of substances, including proteins, salts, glucose, fats, water, and white blood cells. Unlike blood, lymph does not normally contain any red blood cells. Answer : (d)
Q.27
QRS complex of a standard ECG represents ... ... [ MPPMT 2011 ]
0%
a) Excitation or depolaristaion of atria
0%
b) Depolarisation of ventricles
0%
c) Repolarisation of ventricles
0%
d) None of the above
Explanation
QRS- the complex represents the depolarization of the ventricles. This is followed by an isoelectric segment. T wave- this represents ventricular repolarization. Atrial Contraction- the atria mechanically contract starting at the beginning of the P wave, until the beginning of the QRS complex. Answer : (b)
Q.28
Mitral/ Bicuspid valve connects ... ... [ BHU 1986]
0%
a) Left atrium and left ventricle
0%
b) Left atrium and right ventricle
0%
c) Right atrium and left ventricle
0%
d) Right atrium and right ventricle
Explanation
Answer : (a)
Q.29
Find the correct descending order of percentage proportion of leucosytes in human blood... ... [ Guj ECET 200 9]
0%
a) Neutrophils → Basophils → Lymphocytes → Acidophils → Monocytes
0%
b) Neutrophils → Monocytes → Lymphocytes → Acidophils → Basophils
0%
c) Neutrophils → Lymphocytes → Monocytes → Acidophils → Basophils
0%
d) Neutrophils → Acidophils → Basophils → Lymphocytes → Monocytes
Explanation
Answer : (c)
Q.30
The life of the erythrocytes in mammalian blood is about .... [ AFMC 1996 ]
0%
a) 120 days
0%
b) 150 days
0%
c) 190 days
0%
d) 180 days
Explanation
Answer : (a)
0 h : 0 m : 1 s
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