Nervous System
Biology · तंत्रिका तंत्र
📋Quick Overview
The nervous system coordinates body activities using electrical signals. CNS = Brain + Spinal Cord. PNS = nerves connecting CNS to body. Brain parts: Cerebrum (thinking, memory — largest part), Cerebellum (balance, coordination), Medulla oblongata (involuntary actions — breathing, heartbeat). Neuron = basic unit: Dendrite(receives)→Cell Body→Axon(transmits). Reflex action = automatic rapid response via spinal cord (not brain). Synapse = gap between two neurons.