Match the following columns and select the correct option :
Column I | Column II | ||
(a) | Pneumotaxic centre | (i) | Alveoli |
(b) | O2 dissociation curve | (ii) | Pons region of the brain |
(c) | Carbonic anhydrase | (iii) | Haemoglobin |
(d) | Primary site of exchange of gases | (iv) | R.B.C. |
(a) | (b) | (c) | (d) | |
1. | (i) | (iii) | (ii) | (iv) |
2. | (ii) | (iii) | (iv) | (i) |
3. | (iii) | (ii) | (iv) | (i) |
4. | (iv) | (i) | (iii) | (ii) |
The dorsal respiratory group of the respiratory center in the brain stem stimulates:
1. external intercostals | 2. internal intercostals |
3. diaphragm | 4. rectus abdominus |