Interesting Facts related Human Body for SSC Exams pdf

Interesting Facts related Human Body for SSC Exams pdf

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Some Important Facts related to 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
  • 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

Interesting Facts related Human Body for SSC Exams pdf