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Q. No.Adult human RBCs are enucleated. Which of the following statement(s) is/ are the 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
1. Only (a)
2. (a),(c) and (d)
3. (b) and (c)
4. Only (d)
1. Only (a)
2. (a),(c) and (d)
3. (b) and (c)
4. Only (d)
Subtopic: Blood: General Description & RBC: Part 1 | Blood: General Description & RBC |
72%
Level 2: 60%+
NEET - 2017
Hints
Match the following columns and select the correct option:
| Column-I | Column-I | ||
| (a) | Eosinophils | (i) | Immune response |
| (b) | Basophils | (ii) | Phagocytosis |
| (c) | Neutrophils | (iii) | Acidophils |
| (d) | Lymphocytes | (iv) | Release granules containing histamine |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (ii) | (iii) |
| 2. | (i) | (ii) | (iv) | (iii) |
| 3. | (ii) | (i) | (iii) | (iv) |
| 4. | (iii) | (iv) | (ii) | (i) |
Subtopic: Blood: General Description & RBC: Part 2 | Blood: White Blood Cells | Blood: General Description & RBC |
84%
Level 1: 80%+
NEET - 2020
Hints
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
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 |
87%
Level 1: 80%+
Hints
Match List-I with List-II:
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
| 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 |
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 |
89%
Level 1: 80%+
Hints
Match List I with List II
Choose the correct answer from the options given below:
| 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 |
| 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 |
88%
Level 1: 80%+
Hints
Which of the following statements is/are correct in a healthy human?
(i) During inspiration, the pressure within the chest cavity is lower than outside the body.
(ii) During ventricular systole, the pressure in the atrium is lower than in the ventricles.
(iii) During ventricular systole, the pressure in the aorta is lower than the pressure in the atrium.
1. (i) only
2. (iii) only
3. (ii) and (iii) only
4. (i) and (ii) only
(i) During inspiration, the pressure within the chest cavity is lower than outside the body.
(ii) During ventricular systole, the pressure in the atrium is lower than in the ventricles.
(iii) During ventricular systole, the pressure in the aorta is lower than the pressure in the atrium.
1. (i) only
2. (iii) only
3. (ii) and (iii) only
4. (i) and (ii) only
Subtopic: Human Heart: Cardiac Cycle |
77%
Level 2: 60%+
Hints
Arrange the following formed elements in the decreasing order of their abundance in blood in humans :
Choose the most appropriate answer from the options given below:
| (a) | Platelets | (b) | Neutrophils |
| (c) | Erythrocytes | (d) | Eosinophils |
| (e) | Monocytes | ||
| 1. | (c), (a), (b), (e), (d) | 2. | (c), (b), (a), (e), (d) |
| 3. | (d), (e), (b), (a), (c) | 4. | (a), (c), (b), (d), (e) |
Subtopic: Blood: White Blood Cells |
65%
Level 2: 60%+
NEET - 2022
Hints
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) |
Subtopic: Circulatory Pathways |
72%
Level 2: 60%+
Hints
Read the given statements carefully:
How many of the given statements are correct?
1. Three
2. Four
3. Two
4. One
| 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. |
1. Three
2. Four
3. Two
4. One
Subtopic: Human Heart: Gross Anatomy | ECG & Coronary Artery Disease | Lymph | Blood: General Description & RBC |
63%
Level 2: 60%+
Hints
| 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 |
86%
Level 1: 80%+
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