More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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Illicit drug use costs the United States approximately $181 billion every year.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
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There are more sensory neurons in the tongue than in any other part of the body.
Neuron (nerve cell) structure.
Neuron-to-neuron chemical synapses.
Neurotransmitters of the Autonomic Nervous System (2 of 2)
First-order sensory neuron with encapsulated nerve endings