Important Facts About Human Body

Largest
and strongest Bone in the body:
Femur (thigh bone)
Smallest
Bone in the body:
Stapes in ear
Number
of Cells in the body:
75 trillion
Volume
of Blood in the body:
6 litres (in 70 kg body)
Number
of Red Blood Cells(R.B.C.):
1. In male: 5 to 6 million/cubic mm
2. In female: 4 to 5 million/cubic mm
Life
span of Red Blood Cells(R.B.C.):
100 to 120 days
Life
span of White Blood Cell(W.B.C.):
3-4 days
Normal
White Blood Cell(W.B.C.) count:
5000-10000/cubic mm
Time
taken by R.B.C. to complete
one
cycle of circulation:
20 seconds
Other
name of Red Blood Cell (R.B.C.):
Erythrocytes
Largest
White Blood Cells:
Monocytes
Smallest
White Blood Cells:
Lymphocyte
Who
discovered Blood Group:
Karl Landsteiner
Blood
Platelets count:
150,000 – 400,000 platelets per micro
litre
Haemoglobin
(Hb):
1. In male: 14-15 gm/100 c.c. of
blood
2. In female: 11-14 gm/100 c.c. of
blood
Hb
content in body:
500-700 gm
pH
of Urine:
6.5-8
pH
of Blood:
7.36-7.41
Volume
of Semen:
2-5 ml/ejaculation
Normal
Sperm Count:
250-400 million/ejaculation
Menstrual
cycle:
28 days
Menopause
age:
45-50 years
Blood
clotting time:
3-5 minutes
Weight
of Brain:
1300-1400 gm in human adult
Normal
Blood Pressure (B.P.):
120/80 mm Hg
Universal
blood donor:
O
Universal
blood recipient:
AB
Average
body weight:
70 kg
Normal
body temperature:
37 degree celsius
Breathing
Rate at rest:
12-16/minute
Number
of Spinal Nerves:
31 pairs
Largest
Endocrine Gland:
Thyroid gland
Gestation
period:
40 weeks or 9 calendar months
Normal
Heart Beat at rest:
72 beats per minute
Largest
Gland:
Liver
Largest
Muscle in the body:
Gluteus Maximus or Buttock Muscle
Smallest
Muscle in the body:
Stapedius
Largest
Artery:
Aorta
Largest
Vein:
Inferior Vena Cava
Largest
and longest Nerve:
Sciatic Nerve
Longest
Cell:
Neurons (nerve cells)
Minimum
distance for proper vision:
25 cm
Pulse
rate:
72 per minute
Thinnest
Skin:
Eyelids
Weight
of Heart:
200-300 gm

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