Facts about Human Body

• Largest and Longest bone in a man .......... Femur (thigh bone)
• Smallest muscle............................................ Stapedius
• Smallest bone ............................................... Stapes (middle-ear)
• Total amount of blood in body................... 5.6 litres (1/15 of body weight) 
• Life span of RBC........................................... 120 days
• Number of RBC's ......................................... in male 5000,000 /cu.mm /in female 45,00,000/cu.mm
• Number of WBC's....................................... 5000-10000/cu.mm
• Life Span of WBC....................................... 2-5 days
• Heart beats ................................................. 72 per minute
• Average amount of haemoglobin ............ 14-15 mg/100 ml of blood 
• Thinnest skin .............................................Conjunctiva (eyelid)
• Largest endocrine gland .......................... Thyroid gland
• Longest cell in body ................................. Nerve cell
• Smallest cell in human body.................... Sperm cell
• Largest cell in human body ...................... Ovum