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Body Fluids And Circulation

251 Questions Start Allen Test
All Exams Allen
Q151 Allen PYQ MCQ
How do parasympathetic neural signals affect the working of the heart?
A.
Reduce both heart rate and cardiac output.
B.
Heart rate is increased without affecting the cardiac output.
C.
Both heart rate and cardiac output increase.
D.
Heart rate decreases but cardiac output increases.
Q152 Allen PYQ MCQ
Blood pressure in the mammalian aorta is maximum during :
A.
Diastole of the right ventricle
B.
Systole of the left ventricle
C.
Diastole of the right atrium
D.
Systole of the left atrium
Q153 Allen PYQ MCQ
Blood pressure in the pulmonary artery is :-
A.
same as that in the aorta.
B.
more than that in the carotid.
C.
more than that in the pulmonary vein.
D.
less than that in the venae cavae.
Q154 Allen PYQ MCQ
Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.
A.
Neutrophils
B.
Thrombocytes
C.
Erythrocytes
D.
Leucocytes
Q155 Allen PYQ MCQ
Serum differs from blood in :-
A.
Lacking clotting factors
B.
Lacking antibodies
C.
Lacking globulins
D.
Lacking albumins
Q156 Allen PYQ MCQ
Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature ?
(a) They do not need to reproduce (b) They are somatic cells (c) They do not metabolize (d) All their internal space is available for oxygen transport
A.
only (a)
B.
(a), (c) and (d)
C.
(b) and (c)
D.
only (d)
Q157 Allen PYQ MCQ
The hepatic portal vein drains blood to liver from :
A.
Stomach
B.
Kidneys
C.
Intestine
D.
Heart
Q158 Allen PYQ Match the Columns
Match the items given in Column I with those in Column Il and select the correct option given below: Match
with :
Column-IColumn-II
(A)Tricuspid valve
(B)Bicuspid valve
(C)Semilunar valve
(I)Between left atrium and left ventricle
(II)Between right ventricle and pulmonary artery
(III)Between right atrium and right ventricle
A.
A-III, B-I, C-II
B.
A-I, B-III, C-II
C.
A-I, B-II, C-III
D.
A-II, B-I, C-III
Q159 Allen PYQ Match the Columns
Match the items given in Column I with those in Column Il and select the correct option given below :- Match
with :
Column-IColumn-II
(A)Fibrinogen
(B)Globulin
(C)Albumin
(I)Osmotic balance
(II)Blood clotting
(III)Defence mechanism
A.
A-III, B-II, C-I
B.
A-I, B-II, C-III
C.
A-I, B-III, C-II
D.
A-II, B-III, C-I
Q160 Allen PYQ Match the Columns
Match the Column - I with Column -II.
Column-IColumn-II
(A)P-wave
(B)QRS complex
(C)T-wave
(D)Reduction in the size of T-wave
(I)Depolarisation of ventricles
(II)Repolarisation of ventricles
(III)Coronary ischemia
(IV)Depolarisation of atria
(V)Repolarisation of atria
A.
A-IV, B-I, C-II, D-III
B.
A-IV, B-I, C-II, D-V
C.
A-II, B-I, C-V, D-III
D.
A-II, B-III, C-V, D-IV
Q161 Allen PYQ MCQ
All the components of the nodal tissue are auto excitable. Why does the SA node act as the normal pacemakar?
A.
SA node has the lowest rate of depolarisation.
B.
SA node is the only component to generate the threshold potential
C.
Only SA node can convey the action potential to the other components.
D.
SA node has the highest rate of depolarisation.
Q162 Allen PYQ MCQ
A specialised nodal tissue embedded in the lower corner of the right atrium, close to Atrio-ventricular septum, delays the spreading of impulses to heart apex for about 0.1 sec. The delay allows.
A.
blood to enter aorta.
B.
the ventricles to empty completely.
C.
blood to enter pulmonary arteries.
D.
the atria to empty completely.
Q163 Allen PYQ Match the Columns
Match the following columns and select the correct option. Match Column-I with Column-II"
Column-IColumn-II
(A)Eosinophils
(B)Basophils
(C)Neutrophils
(D)Lymphocytes
(I)Immune response
(II)Phagocytosis
(III)Release histaminase, destructive enzymes
(IV)Release granules containing histamine
A.
A-II, B-I, C-III, D-IV
B.
A-III, B-IV, C-II, D-I
C.
A-IV, B-I, C-II, D-III
D.
A-I, B-II, C-IV, D-III
Q164 Allen PYQ MCQ
Which of the following conditions cause erythroblastosis foetalis ?
A.
Mother Rh⁺ve and foetus Rh⁻ve
B.
Mother Rh⁻ve and foetus Rh⁺ve
C.
Both mother and foetus Rh⁻ve
D.
Both mother and foetus Rh⁺ve
Q165 Allen PYQ MCQ
Persons with 'AB' blood group are called as 'Universal recipients'. This is due to :-
A.
Absence of antigens A and B on the surface of RBCs
B.
Absence of antigens A and B in plasma
C.
Presence of antibodies, anti-A and anti-B, on RBCs
D.
Absence of antibodies, anti-A and anti-B, in plasma
Q166 Allen PYQ MCQ
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?
A.
Thrombin
B.
Renin
C.
Epinephrine
D.
Thrombokinase
Q167 Allen PYQ MCQ
Which one of the following statements is correct?
A.
The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
B.
Blood moves freely from atrium to the ventricle during joint diastole.
C.
Increased ventricular pressure causes closing of the semilunar valves.
D.
The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction
Q168 Allen PYQ MCQ
Given below are two statements: Statement I: The coagulum is formed of network of threads called thrombins. Statement II: Spleen is the graveyard of erythrocytes. In the light of the above statements, choose the most appropriate answer from the options given below:
A.
Both Statement I and Statement Il are incorrect
B.
Statement I is correct but Statement II is incorrect
C.
Statement I is incorrect but Statement II is correct
D.
Both Statement I and Statement II are correct
Q169 Allen PYQ MCQ
A unique vascular connection between the digestive tract and liver is called
A.
Hepato-pancreatic system
B.
Hepatic portal system
C.
Renal portal system
D.
Hepato-cystic system
Q170 Allen PYQ MCQ
Arrange the following formed elements in the decreasing order of their abundance in blood in humans :
(a) Platelets (b) Neutrophils (c) Erythrocytes (d) Eosinophils (e) Monocytes
Choose the most appropriate answer from the options given below :-
A.
(c), (a), (b), (e), (d)
B.
(c), (b), (a), (e), (d)
C.
(d), (e), (b), (a), (c)
D.
(a), (c), (b), (d), (e)
Q171 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(A)P-wave
(B)Q-wave
(C)QRS complex
(D)T-wave
(I)Beginning of systole
(II)Repolarisation of ventricles
(III)Depolarisation of atria
(IV)Depolarisation of ventricles
A.
A-IV, B-III, C-II, D-I
B.
A-II, B-IV, C-I, D-III
C.
A-I, B-II, C-III, D-IV
D.
A-III, B-I, C-IV, D-II
Q172 Allen PYQ MCQ
Which of the following statements are correct? A. Basophils are most abundant cells of the total WBCs B. Basophils secrete histamine, serotonin and heparin C. Basophils are involved in inflammatory response D. Basophils have kidney shaped nucleus E. Basophils are agranulocytes Choose the correct answer from the options given below:
A.
C and E only
B.
B and C only
C.
A and B only
D.
D and E only
Q173 Allen PYQ Match the Columns
Match Column-I with Column-II. Choose the correct answer from the options given below : Match Column-I with
:
Column-IColumn-II
(A)P-wave
(B)QRS complex
(C)T wave
(D)End of T wave
(I)Depolarisation of ventricles
(II)End of systole
(III)Depolarisation of atria
(IV)Repolarisation of ventricles
A.
A-IV, B-I, C-III, D-II
B.
A-I, B-IV, C-II, D-II
C.
A-IV, B-III, C-I, D-II
D.
A-III, B-I, C-IV, D-II
Q174 Allen PYQ Match the Columns
Match Column-I with Column-II. Choose the correct answer from the options given below :-
Column-IColumn-II
(A)Eosinophils
(B)Lymphocytes
(C)Neutrophils
(D)Monocytes
(I)6–8%
(II)2–3%
(III)20–25%
(IV)60–65%
A.
A-IV, B-I, C-II, D-II
B.
A-IV, B-I, C-III, D-II
C.
A-II, B-III, C-IV, D-I
D.
A-II, B-III, C-I, D-IV
Q175 Allen PYQ MCQ
Following are the stages of pathway for conduction of an action potential through the heart :- A. AV bundle B. Purkinje fibres C. AV node D. Bundle branches E. SA node Choose the correct sequence of pathway from the options given below:-
A.
E-C-A-D-B
B.
A-E-C-B-D
C.
B-D-E-C-A
D.
E-A-D-B-C