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Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Did you know?
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.
![(A) Lumbar puncture, also known as spinal tap; (B) section of the vertebral column showing the spina](https://biology-forums.com/gallery/47/medium_14755_07_10_12_3_22_05_93422479.jpeg)
![Lumbar puncture. Abbreviated LP, the lumbar puncture is a common procedure that withdraws cerebrospi](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_49_35_94142278.jpeg)