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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?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
Did you know?
In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.