1. Weight of Liver: 1.2 to 1.5 kg
2. Weight of Kidney: 120 to 170 gm
3. Number of lobes in Liver: 2
4. Number of salivary glands : 3 pairs
5. Number of portions in the stomach: 4 (Cardiac, fundic, body & Pyloric).
6. Stomach stores food for 4 to 5 hours.
7. pH of saliva: 6.8
8. pH of gastric juice: 1.8
9. pH in the duodenum: 7.8
10. pH of urine: 6.0
11. Breathing rate: 12-16 times/minute
12. Tidal volume: 500 mL
13. IRV: 2500 – 3000 mL
14. ERV: 1000 – 1100 mL
15. RV: 1100 – 1200 mL
16. Water in plasma: 90-92%
17. Water in watermelon: 92%.
18. Water in herbaceous plants: 85-90%.
19. Water in the human cell: 70-90%.
20. Colon is divided into 4 parts (Ascending, transverse, descending, and sigmoid parts).
21. Solubility of CO2 is 20-25 times higher than that of O2 .
22. Diffusion membrane is made up of 3 layers.
23. Total thickness of diffusion membrane: < 1 mm
24. No. of wall layers in the alimentary canal (from the esophagus to rectum) : 4
25. Gastric gland has 3 types of cells: Mucus neck cells, chief cells, and parietal cells
26. Every 100 ml of oxygenated blood can deliver how much O2 to tissues: 5 mL
27. Every 100 ml of deoxygenated blood delivers how much CO2 to the alveoli: 4 mL

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