Which of the following combination is correctly related to ECG?
A. It is a graphical representation of electric activity
B. Each peak is identified with a letter
C. Each peak is identified with numbers
D. Multiple leads are attached to the chest region
E. Single lead is attached to the chest region

Choose the correct answer from the options given below:
1. A & E only
2. B, C, D only
3. A, B, D only
4. A only
Subtopic:  ECG & Coronary Artery Disease |
 88%
From NCERT
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Match List I with List II
List I List II
A. Bicuspid (mitral) valve I. Between right atrium and right ventricle
B. Aortic semilunar valve  II. Between left atrium and left ventricle
C. Tricuspid valve III. Between right ventricle and pulmonary artery
D. Pulmonary semilunar valve IV. Between left ventricle and aorta
Choose the correct answer from the options given below:
1. A - II, B - IV, C - III, D - I
2. A - II, B - IV, C - I, D - III
3. A - III, B - I, C - I, D - IV
4. A - II, B - III, C - IV, D - I
Subtopic:  Human Heart: Gross Anatomy |
 89%
From NCERT
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Match List I with List II:
List I List II
A. P-wave I. Ventricular repolarization-relaxation phase
B. P-R interval II. The onset of ventricular depolarization - leads to ventricular contraction
C. QRS complex III. Time for the impulse to be conducted from SA node to the ventricles through the AV node
D. T-wave IV. Atrial depolarization - leads to atrial contraction
Choose the correct answer from the options given below:
1.  A - (III); B - (IV); C - (II); D - (I)
2.  A - (IV); B - (III); C - (II); D - (I)
3.  A - (IV); B - (III); C - (I); D - (II)
4.  A - (I); B - (II); C - (III); D - (IV
Subtopic:  ECG & Coronary Artery Disease |
 90%
From NCERT
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Match column-I with column-II and select the correct option.
    Column-I               Column-II
a. Corvus                  (i) Single circulation
b. Aedes                   (ii) Open circulation
c. Calotes                 (iii) Double circulation
d. Scoliodon             (iv) Incomplete double circulation
1. a(ii), b(iii), c(iv), d(i)
2. a(iii), b(i), c(iv), d(ii)
3. a(iii), b(ii), c(iv), d(i)
4. a(iii), b(ii), c(i), d(iv)
 71%
From NCERT
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Read the given statements carefully:
A. RBCs are devoid of nucleus in most of the mammals and are biconvex in shape.
B. Lymph has the same mineral distribution as that in plasma.
C. By counting the number of QRS complexes in ECG that occur in a given time period, one can determine the heartbeat rate of an individual.
D. Heart is an endodermally derived organ.
How many of the given statements are correct?
1. Three
2. Four
3. Two
4. One
Subtopic:  Human Heart: Gross Anatomy | ECG & Coronary Artery Disease | Lymph | Blood: General Description & RBC |
 60%
From NCERT
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Match the formed elements in column I with their percent of total WBCs in column II and select the correct option:
Column I Column II
(a) Eosinophils (i) 60-65%
(b) Monocytes (ii) 0.5-1%
(c) Basophils (iii) 6-8%
(d) Neutrophils (iv) 2-3%
 
(a) (b) (c) (d)
1. (iii) (iv) (ii) (i)
2. (i) (ii) (iii) (iv)
3. (iv) (iii) (ii) (i)
4. (iv) (iii) (i) (ii)
Subtopic:  Blood: White Blood Cells | Blood: General Description & RBC |
 82%
From NCERT
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Match column-I with column-II and select the correct option: 
Column-I Column-II
(a) Monocytes (i) Non-nucleated cell fragments 
(b) Eosinophils (ii) Bilobed nucleus
(c) Neutrophils (iii) Nucleus is bean-shaped 
(d) Platelets (iv) Many lobed nucleus 

1. a(iii), b(ii), c(iv), d(i)
2. a(ii), b(iii), c(iv), d(i)
3. a(iii), b(ii), c(i), d(iv)
4. a(iv), b(iii), c(ii), d(i)
Subtopic:  Blood: White Blood Cells |
 72%
From NCERT
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Assertion (A): The walls of ventricles are much thicker than that of the atria.
Reason (R): Ventricles pump blood to different organs and the pressure with which the blood flows through them is much more than the auricles.
In the light of above statements, choose the correct option.
1. Both (A) and (R) are true and (R) is the correct explanation of (A)
2. Both (A) and (R) are true but (R) is not the correct explanation of (A)
3. (A) is true but (R) is false
4. Both (A) and (R) are false
Subtopic:  Human Heart: Double Circulation |
 85%
From NCERT
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Read the given statements carefully.
(a) Congestion of lungs is one of the main symptoms of heart failure.
(b) Each vein has an inner lining of cuboidal endothelium, called tunica intima.
(c) The cardiac output of an athlete will be much lower than that of an ordinary man.
Select the correct option.
1. Only statements (a) and (b) are correct.
2. Only statements (a) and (c) are correct.
3. Only statement (c) is correct.
4. Only statements (b) and (c) are incorrect.
Subtopic:  Human Heart: Double Circulation | Human Heart: Cardiac Cycle |
 58%
From NCERT
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Read the given statements carefully.
(a) The systemic circulation provides nutrients, CO2, and other essential substances to the tissues and takes O2 and other harmful substances away for elimination.
(b) Heart of both humans and cockroach is myogenic.
(c) Intestinal juice along with pancreatic juice is known as succus entericus.
(d) The SAN can generate the maximum number of action potentials, i.e., 70-75 min–1
How many of the given statements are correct?
1. Four
2. Three
3. Two
4. One
Subtopic:  Human Heart: Cardiac Cycle |
From NCERT
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