Today, In this list/table, we are going to share with you the incredible facts about the human body. For example, did you know that children can only see in black and white? Or that one of your hairs can stay on your head for 7 years? The human body is attractive and we are going to share it with you.
Important Facts of Human Body
The only part of the body that has no blood supply is the ‘cornea‘ of the eye. It receives oxygen directly from the air. The human brain has a memory capacity which is the equivalent of more than four terabytes on a hard drive.
The human body is an extremely complex and elaborate system and it still baffle researchers repeatedly despite thousands of years of medical awareness.
List/table of Important Facts of Human Body:
| # | Particular | Description |
|---|---|---|
| 1. | Length of alimentary canal | Approximately 8 metres |
| 2. | BMR (Basal metabolic rate) | 1600 K. Cal/day |
| 3. | Number of cells in body | 75 trillion |
| 4. | Longest bone | Femur (Thigh bone) |
| 5. | Smallest bone | Ear ossicle, stapes |
| 6. | Weight of brain | 1400 gms |
| 7. | Blood volume | 6.8 litres (in 70 kg body) |
| 8. | Normal B.P. | 120/80 mm Hg |
| 9. | Number of R.B.C. | (a) In male: 4.5-5.O million/cubic mm
(b) In female: 4.0-4.5 million/cubic mm |
| 10. | Life span of R.B.C. | 120 days |
| 11. | Nomal W.B.C. count | 5000-1000/cubic mm |
| 12. | Lite span of W.B.C. | 3-4 days |
| 13. | D.L.C. (Differential leucocyte count) | (a) Basophils: 0.5-1%
(b) Eosinophils: 1-3% (c) Monocytes: 3-8% (d) Neutrophils: 40-70% (e) Lymphocytes: 2-25% |
| 14. | Blood platelets count | 2,00,000-4,00,000/cubic mm |
| 15. | Haemoglobin | (a) In male: 14-15.6 gm/100 c.c. of blood
(b) In female: 11-14 gm/100 c.c. of blood |
| 16. | Hb content in body | 500-700 gm |
| 17. | Universal blood donor | ‘O’ Rh-ve |
| 18. | Universal blood recipient | AB |
| 19. | Blood clotting time | 2-5 minutes |
| 20. | Average body weight | 70 kg |
| 21. | Normal body femperature | 98.4° F or 37° C |
| 22. | Breathing rate | 16-20/minute |
| 23. | Dental formula | adult: 2123/2123 = 32,
child: 2120/2120 = 22 milk teeth |
| 24. | Number of cranial nerves | 12 pairs |
| 25. | Number of spinal nenves | 31 pairs |
| 26. | Largest endocrine gland | Thyroid |
| 27. | Gestation period | 9 months (253-266 days) |
| 28. | Normal heart beat | 72-75/minute |
| 29. | Largest gland | Liver |
| 30. | Largest muscle in the body | Gluteus maximus (Buttock muscle) |
| 31. | Largest smooth muscle | Uterus of pregnant woman |
| 32. | Smallest muscle in the body | Stapedius |
| 33. | Largest artery | Abdominal aorta |
| 34. | Largest vein | Interior venacava |
| 35. | Largest W.B.C. | Monocyte |
| 36. | Smallest W.B.C. | Lymphocyte |
| 37. | Greatest regeneration power | In liver |
| 38. | Longest nerve | Sciatic |
| 39. | Longest cell | Neuron (nerve cell) |
| 40. | Menstrual cycle | 28 days |
| 41. | Menopause age | 45-50 years |
| 42. | Minimum regeneration power | In brain cells |
| 43. | Minimum distance tor proper vision | 25 cm |
| 44. | Type of placenta | Haemochorial (Chorioallantoic) |
| 45. | Pulse rate | 72/minute |
| 46. | Volume ot semen | 2-4 ml/ejaculation |
| 47. | Normal sperm count | 200-350 million/ejaculation |
| 48. | ESR (normal Erythrocyte sedimentation rate) | 4-10 min./hour |
| 49. | Thinnest skin | Conjunctiva |
| 50. | pH of gastric juice | 1.4 |
| 51. | pH of urine | 6.0 |
| 52. | pH of blood | 7.35-7.45 |
| 53. | pH of bile | 7.5 |
| 54. | pH of pancreatic juice | 8.5 |
| 55. | Total number of muscles in the body | 639 |
| 56. | Total number of bones in the body | 206 |
| 57. | Largest organ of human body | Skin |
