Numbers in Human Body

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Number of bones ........................................... 206
Number of muscles ........................................ 639

Human red blood cell
(Photo credit: Wikipedia)

Number of ribs ................................................ 24
Number of bones in skull ................................ 22
Number of bones in neck .................................. 7
Number of bones in face ................................. 14
Number of cranial nerves ........................ 12 pairs
Number of spinal nerves ......................... 31 pairs

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Number of heart beat .............. 70-72 times/minute
Respiratory rate ........................ 16-20 times/minute

Rate of blood pressure .................... 120/80 mm. Hg.
Number of RBC's (in male)..........  5,000,000/Cu. m.m.
Number of RBC's (in female ).......... 45,000,000/Cu. m.m.
Life span of RBC...................................... 120 days
Life span of WBC ................................... 2-15 days
Amount of blood ...................................... 5-6 litres
Average amount of hemoglobin ............................14-15 mg/100 ml blood
Weight of brain ............................................ 1.4 kg.

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