Understanding the Foundations of Neurological Health

The Nervous System's Architecture

The nervous system is broadly divided into the central and peripheral components. The central nervous system (CNS) comprises the brain and spinal cord, responsible for processing information and coordinating responses.

Neurons, the fundamental units of the nervous system, are specialized cells that transmit electrical signals. They consist of a cell body, dendrites which receive signals, and an axon which transmits them.

Neuron: Cell Body (Soma) + Dendrites + Axon

Action Potentials & Signal Transmission

Communication within the nervous system relies on electrical signals called action potentials. These are rapid changes in membrane potential that propagate along axons.

The process begins with depolarization – a shift towards negative charge – triggered by stimuli. This is followed by repolarization, returning to the resting state.

Vm = -70mV (Resting Membrane Potential)

Synaptic Transmission & Neurotransmitters

Neurons don’t physically touch; instead, they communicate at synapses – junctions between neurons. This communication is chemical.

Neurotransmitters are released from the presynaptic neuron into the synaptic cleft and bind to receptors on the postsynaptic neuron, initiating a new signal.

Synaptic Cleft: Distance between Presynaptic & Postsynaptic Neurons

Neurological Disorders – An Overview

Various neurological disorders disrupt the normal function of the nervous system. These include stroke, multiple sclerosis, Parkinson’s disease and Alzheimer's disease.

Understanding the underlying mechanisms of these diseases is crucial for developing effective treatments and therapies.

Frequently asked questions

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