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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).
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.
Did you know?
Thyroid conditions may make getting pregnant impossible.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.