Important Facts about Human Body

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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 itres (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 Cells (W.B.C.)
:
3-4 days
Normal White Blood Cells (W.B.C.) count
:
5000-10000/cubic mm
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
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
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
Thinnest Skin
:
Eyelids
Weight of Heart
:
200-300 gm


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