Biology Important things to learn

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. Weight of Brain : 1400 gms

6. Blood Volume 6.8 litres (in 70 kg body)

Normal B.P 120 / 80 mm Hg

7. Number of R.B.C (a) In Male : 4.5 – 5.0 million / cubic mm.(b) In Female : 4.0 – 4.5 million / cubic mm

8. Life Span of R.B.C : 120 days

9. Normal W.B.C Count 5000 – 1000 / cubic mm

10. Life Span of W.B.C : 3 – 4 days

11. 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%

12. Blood Platelets Count : 2,00,000 – 4,00,000 / cubic mm

13. Haemoglobin (a) In Male : 14 – 15.6 gm / 100 c.c. of blood(b)In Female : 11 – 14 gm / 100 c.c. of blood

14. Hb Content in Body 500 – 700 gm

15. Universal Blood Donor: O Rh -ve

16. Universal Blood Recipient : AB

17. Blood Clotting Time: 2 – 5 minutes

18. Average Body Weight: 70 kg

19. Normal Body Temperature : 98.4° F or 37° C

20. Breathing Rate : 16 – 20 / minute

21. Dental Formula Adult : 2123 / 2123 = 32;

22. Child : 22 Milk Teeth

23. Largest Endocrine Gland : Thyroid

24. Gestation Period 9 months (253 – 266 days)

25. Normal Heart Beat” 72 – 75 / minute

26. Largest Gland : Liver

27. Largest Muscle in the Body Gluteus maximus (Buttock Muscle)

28. Largest Artery:  Abdominal Aorta

29. Largest Vein: Inferior Venacava

30. Largest W.B.C : Monocyte

31. Smallest W.B.C : Lymphocyte

32. Longest Nerve : Sciatic

33. Longest Cell : Neuron (Nerve Cell)

34. Menstrual Cycle : 28 days

35. Menopause Age : 45 – 50 Years

36. Minimum Distance for proper vision : 25 cm

37. Pulse Rate 72 / minute.

38. Normal Sperm Count 200 – 350 million / ejaculation.

39. FSR (normal Erythrocyte Sedimentation rate) 4 – 10 min / hr

40. pH of Gastric Juice : 1.4

41. pH of Urine : 6.0

42. pH of Blood: 35 – 7.45

43. pH of Bile : 7.5

44. pH of Pancreatic Juice : 8.5

45. Total Number of Muscles in the Body: 639

46. Total Number of Bones in the Body : 206

47. Largest Organ of Human Body:  Skin