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Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

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Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Conduction of the action potential along an axon. Conduction of the action potential along an axon.
PHAGES IN ACTION PHAGES IN ACTION
Refractory periods associated with an action potential. Refractory periods associated with an action potential.
Schematic depiction of the action of tryptophan synthase in one functional unit Schematic depiction of the action of tryptophan synthase in one functional unit
Structure and action of the T7 phage gene 4 helicase Structure and action of the T7 phage gene 4 helicase
Action of penicillinase Action of penicillinase
Video: Digestion Animation

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