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Neurons (or nerve cells) are specialized cells that transmit and receive electrical signals in the body. Neurons are composed of three main parts: dendrites, a cell body, and an axon. Signals are received through the dendrites, travel to the cell body, and continue down the axon until they reach the synapse (the communication point between two neurons).
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This video discusses synapses, where neurons communicate with target cells. It differentiates between two types of synapses: chemical and electrical. It also explains the role of the synaptic cleft, presynaptic and postsynaptic membranes, and neurotransmitters in this process.
2023年12月31日 · The SAT is adapting to better meet the needs of students and educators in our digital age. This means for U.S. students, the last administration of the pencil-and-paper SAT will be in December 2023, and all students will take the Digital SAT starting in 2024.
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