إليك نظرة على عصبون يحتضر! الخلايا العصبية هي خلايا في الجهاز العصبي تنقل المعلومات إلى الخلايا العصبية والعضلات والغدد الأخرى. • 🧬 Here’s a look at a dying neuron! Neurons are cells in the nervous system that transmit information to other nerve cells, muscle, and gland cells. Though neurons are tiny, they are basic working units of the brain and nervous system! When our neurons die, they are lost forever. Neuron death can be a result of many things. In some cases it can be traumatic injury, environmental toxins, genetic disease, random cause, or through apoptosis (a form of programmed cell death.) What does a neuron look like? • A useful analogy is to think of a neuron as a tree. A neuron has three main parts: dendrites, an axon, and a cell body or soma , which can be represented as the branches, roots and trunk of a tree, respectively. A dendrite (tree branch) is where a neuron receives input from other cells. Dendrites branch as they move towards their tips, just like tree branches do, and they even have leaf-like structures on them called spines. • The axon (tree roots) is the output structure of the neuron; when a neuron wants to talk to another neuron, it sends an electrical message called an action potential throughout the entire axon. The soma (tree trunk) is where the nucleus lies, where the neuron’s DNA is housed, and where proteins are made to be transported throughout the axon and dendrites. • Neurons.. Unipolar neuron: only one protoplasmic process (neurite) extends from the cell body Bipolar neuron: neuron with two extensions (one axon and one dendrite) Bipolar cells are specialized sensory neurons for the transmission of special senses Sensory systems: smell, sight, taste, hearing and vestibular functions Multipolar neuron: a single axon and many dendrites (and dendritic branches), allowing for the integration of a great deal of information from other neuron Common in the central nervous system Pyramidal neuron: type of multipolar neuron Found in areas of the brain including the cerebral cortex, the hippocampus, and the amygdala. • #ahmdscience #ahmdaellatif #science #neurons #apoptosis #cell #sensor #DNA https://www.instagram.com/p/B-qeaqrguZv/?igshid=13w6b2vy7w55v
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