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Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

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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.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Female urinary system. Female urinary system.
Components of the nervous system. Components of the nervous system.
The cardiac conduction system. The cardiac conduction system.
A general model of the sensorimotor system. Notice its hierarchical structure, functional ... A general model of the sensorimotor system. Notice its hierarchical structure, functional ...
Lymphatic system vessels and the flow of lymph. Lymphatic system vessels and the flow of lymph.
The NFPA 704 marking system. This voluntary marking system is displayed at participating facilities ... The NFPA 704 marking system. This voluntary marking system is displayed at participating facilities ...
Video: Deafness Culture

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