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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Your heart beats over 36 million times a year.
Did you know?
Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.