Human Body Facts

Human Body Facts

🔸 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.)

➖ In male: 5 to 6 million/cubic mm 

➖ 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):

➖ In male: 14-15 gm/100 c.c. of blood

➖ 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

🔸 Pulse rate:

➖ 72 per minute

🔸 Thinnest Skin:

➖ Eyelids

🔸 Weight of Heart:

➖ 200-300 gm