☞Number of bones - 206 ☞Number of muscles - 639 ☞Number of kidneys - 2 ☞Number of milk teeth - 20 ☞Number of ribs - 24 (12 pairs) ☞Number of chambers in the heart - 4 ☞Largest artery - Aorta ☞Normal Blood pressure - 120 - 80 ☞Ph of blood - 7.4 ☞Number of vertebrae in the spine - 33 ☞Number of vertebrae in the Neck - 7 ☞No of bones in middle Ear - 6 ☞Number of bones in Face - 14 ☞Number of bones in Skull - 22 ☞Number of bones in Chest - 25 ☞Number of bones in Arms - 6 ☞Number of bones in each human middle ear # 3 ☞Number of muscles in the human arm - 72 ☞Number of pumps in heart - 2 ☞Largest organ - Skin ☞Largest gland - Liver ☞Smallest cell - Blood cell ☞Biggest cell - Egg cell (ovum) ☞Smallest bone - Stapes ☞First transplanted organ - Heart ☞Average length of small intestine - 7 m ☞Average length of large intestine - 1.5 m ☞Average weight of new born baby - 2.6 kg. ☞Pulse rate in one minute - 72 times ☞Body Temperature - 36.9o C (98.4o F) ☞Average blood volume - 4 - 5 liters ☞Average life of RBC - 120 days ☞Pregnancy period - 280 days ☞Number of bones in human foot - 33 ☞Number of bones in each wrist - 8 ☞Number of bones in hand - 27 ☞Largest endocrine gland - Thyroid ☞Largest lymphatic organ - Spleen ☞Largest cell - Nerve cell ☞Largest part of brain - Cerebrum ☞Largest & strongest bone - Femur ☞Smallest muscle - Stapedius (Middle ear ) ☞Number of chromosomes in human cell - 46 (23 pairs) ☞Number of bones in New born body - 300 ☞Largest muscle - Buttock (Gluteus Maximus)