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.)

➖ 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

🔸 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

🔸 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