Interesting Facts related to Human Body for SSC & Railway Exams

The human body is made up of various cells, tissues, organs, and other biological systems that work together to perform a wide range of specialized functions required to live a healthy existence. An organ is a collection of various kinds of tissues arranged in such a way that they can perform a specific function together. Human anatomy and physiology is the scientific study of the body’s structures and processes.  

Organization, Metabolism, Reaction, Movement, and Reproduction are the fundamental processes of the human body in life.

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: 37 trillion
• Volume of Blood in the body: 5-6 litres
• 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.): 5-20 days
• Normal White Blood Cell (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 microlitre
• 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
• 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. 

All the Best