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Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

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Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Examples of animals with external gills. Examples of animals with external gills.
External and internal structures of nails. External and internal structures of nails.
Nose, nasal cavity, and pharynx: (A) nasal cartilages and external structure; (B) meatus and positio Nose, nasal cavity, and pharynx: (A) nasal cartilages and external structure; (B) meatus and positio
External nose, mouth, and neck. External nose, mouth, and neck.
Female external genetalia Female external genetalia
Use an Automated External Defibrillator Use an Automated External Defibrillator
Video: Passive Smoke Exposure

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