Interesting GK facts about Human body

 IMPORTANT FACTS ABOUT HUMAN BODY

• Largest organ in the body --- Skin
• Smallest organ in the body --- Pineal gland
• Smallest Bone in the body --- Stapes in ear
• Largest and strongest Bone in the body --- Femur(Thigh Bone)
• Number of cells in the body --- 37 trillion
• Longest cell --- Motor Neuron
• Largest cell --- Feminine egg or ovum
• Smallest cell --- male sperm cell
• Volume of blood in the body --- 5-6 liters
• Life span of Red Blood Cells (RBC) --- 100 to 120 days
• Life span of White Blood Cells (WBC) --- 5-20 days
• Largest WBC --- Monocyte
• Smallest WBC --- Lymphocyte
• Normal White Blood Cells (WBC) count --- 5000-10000/cubic mm
• Blood Platelets count --- 150,000-400,000 platelets per microliter
• Red Blood Cells (RBC) also known as --- Erythrocytes
• Universal Blood Donor --- O
• Universal Blood Receiver --- AB
• Hemoglobin (HB) --- 14-15 gm/100 cc of blood (Male) &
  11-14 gm/100 cc of blood (Female)
• Blood clotting time --- 3-5 minutes
• HB content in the body --- 500-700 gm
• Largest Muscle in the body --- Gluteus
• Maximus or Buttock Muscle
• Smallest Muscle in the body --- Stapedius
• Longest Muscle in the body --- Sartorius
• Largest Artery --- Aorta
• Largest Vein --- Inferior Vena Cava
• Largest and longest nerve --- Sciatic nerve
• Pulse Rate --- 72 per minute
• Weight of Heart --- 200-300 gm
• Normal Heart Beat at rest --- 72 beats per minute
• Average heart size is that of a fist of an adult
• Heart beats around 115000 times a day on an average
• Normal Blood Pressure --- 120/80 mm Hg
• Largest gland --- Liver
• Red Blood Cells are created inside the Bone marrow
• Nose and ears continue growing throughout entire life
• Strongest Muscle in human body --- Tongue
• Bones account for 14% of the body’s total weight
• A baby is born with 300 bones
• Blood is 6 times thicker than water
• pH of Blood --- 7.36-7.41
• pH of Urine --- 6.5-8
• Only part of the body without blood supply is Cornea in the eye
• Number of Bones in face --- 14 bones
• Only part of human body that cannot repair itself --- Tooth
• Normal Body Temperature --- 37 degree Celsius
• Weight of Brain --- 1300-1400 gm (Adult)
• Number of Spinal nerves --- 31 pairs
• Largest Endocrine gland --- Thyroid gland
• Fastest growing nail --- Middle Finger nail
• It takes about 20 seconds for a red blood cell to circle the whole body
• Only organ in the human body that can float on water --- Lungs
• The size of our nose is equal to the size of our thumb finger
• Fingernails grow faster than toenails
• Humans can detect sounds in a frequency range from about 20Hz to 20KHz
• Prokaryotic and Eukaryotic are --- two primary types of cells
• Each drop of blood contains 250 million cells

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