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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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There are more sensory neurons in the tongue than in any other part of the body.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Internal oblique Internal oblique
Variations in the Ocean’s Surface Temperature and Salinity with Latitude Variations in the Ocean’s Surface Temperature and Salinity with Latitude
Daily Variations in Temperature and Relative Humidity Daily Variations in Temperature and Relative Humidity
A very small sampling of organisms in an arctic food web on land. A very small sampling of organisms in an arctic food web on land.
Roundworm Body Plan Roundworm Body Plan
Evolution of internal membranes Evolution of internal membranes
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