Health library home | temas en español | about cancer | women's health | men's health | for your heart | children's health | senior's health | glossaries/printout forms | quizzes/calculators | wellness information | orthopedics | mental health | workplace health | health emergencies | diet & exercise | health news | search health topics | terms of use/privacy policy | health library home | by printing and/or reading this article, you agree that you accept all terms and conditions of use, as specified online. is a prescription needed for viagra in canada buy generic viagra online cheap Nervous system the nervous system includes the brain, the spinal cord (read about "the brain" "the spine") and the nerves that reach out to the rest of the body, acting as a two way street carrying information back and forth. Can buy viagra bangkok buy generic viagra without prescription The brain and spinal cord make up the central nervous system. overnight generic viagra buy cheap viagra no prescription The rest of the nervous system is called the peripheral nervous system. viagra viagra canadian pharmacy The brain and the rest of the nervous system are composed of different types of cells, but the main one is a cell called the neuron. viagra viagra canadian pharmacy All sensations, movements, thoughts, memories and feelings are the result of signals that pass through neurons. british ice cream viagra The national institute of neurological diseases and stroke (ninds) says neurons consist of three parts: cell body - the cell body contains the nucleus, where most of the molecules that the neuron needs to survive and function are manufactured. buy viagra online without script Dendrites - dendrites extend out from the cell body like the branches of a tree and receive messages from other nerve cells. viagra 100 nebenwirkungen Axons - signals pass from the dendrites through the cell body and may travel down an axon to another neuron, a muscle cell or cells in some other organ. buy real viagra online The neuron is usually surrounded by many support cells. Viagra generic online Some types of cells wrap around the axon to form an insulating sheath. viagra viagra canadian pharmacy This sheath can include a fatty molecule called myelin, which provides insulation for the axon and helps nerve signals travel faster and farther. generic viagra tablet Axons may be very short, such as those that carry signals from one cell in the cerebral cortex to another cell less than a hair's width away. viagra for cheap price Or axons may be very long, such as those that carry messages from the brain all the way down the spinal cord. No prescription viagra online canada The longest axon in the body is the sciatic nerve, which goes from the base of the spinal cord all the way down the leg. online pharmacy buy viagra from india The space between an axon and the dendrites of another neuron is called the synapse. generic viagra from india Cells communicate with each other by sending chemicals into the synapse that are picked up by the next cell and passed on. viagra reviews 10mg The spinal cord starts at the base o. yahoo mail virus sending emails viagra cheap generic viagra mg Relatos de Terror

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