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NEURONS




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Semanoor15
لإنضمامl: 9th February 2010
الوسائط: 12713

Painting of Neurons:is an excitable cell in the nervous system that processes and transmits information by electrochemical signaling. Neurons are the core components of the brain, the vertebrate spinal cord, the invertebrate ventral nerve cord, and the peripheral nerves. A number of specialized types of neurons exist: sensory neurons respond to touch, sound, light and numerous other stimuli affecting cells of the sensory organs that then send signals to the spinal cord and brain. Motor neurons receive signals from the brain and spinal cord and cause muscle contractions and affect glands. Interneurons connect neurons to other neurons within the same region of the brain or spinal cord. Neurons respond to stimuli, and communicate the presence of stimuli to the central nervous system, which processes that information and sends responses to other parts of the body for action. Neurons do not go through mitosis, and usually cannot be replaced after being destroyed, although astrocytes have been observed to turn into neurons as they are sometimes pluripotent.

وقت التشغيل: N/A
الحجم: 43.48KB
لإضافةl: 30th September 2009
المشاهدات: 217

Category: Semaedu / Images
السمات: neurone nerve cell neuron impulse stimuli signaling signal brian communication communicate


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