GK Science: Biology PART-1

The length of Alimentary Canal Approximately-  8 meters.
BMR (Basal Metabolic Rate) – 1600 K. Cal/day.
Number of Cells in Body 75 trillion
Longest Bone Femur (Thigh bone).
Weight of Brain : 1400 gms
Blood Volume 6.8 litres (in 70 kg body)
Normal B.P 120 / 80 mm Hg
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
Life Span of R.B.C : 120 days
Normal W.B.C Count 5000 – 1000 / cubic mm
Life Span of W.B.C : 3 – 4 days
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%