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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.
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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
Schematic of typical animal cell depicting the various organelles and structures.
An example of a typical incident report.
A typical ratchet used to rotate a socket. A ratchet makes a ratcheting noise when it is being ...
A typical ball-peen hammer.
A typical hand-operated vacuum pump.
A typical intertidal zone