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) | Release histaminase, destructive enzymes |
(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) |
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)
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 |
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 |
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. |