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
