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Related Concept Videos

The Synapse02:47

The Synapse

133.7K
Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
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Autophagy01:27

Autophagy

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Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
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Electrical Synapses01:28

Electrical Synapses

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Electrical synapses found in all nervous systems play important and unique roles. In these synapses, the presynaptic and postsynaptic membranes are very close together (3.5 nm) and are actually physically connected by channel proteins forming gap junctions.
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
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Chemical Synapses01:26

Chemical Synapses

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
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Chemical Synapses01:26

Chemical Synapses

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
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Overview of Synapses01:25

Overview of Synapses

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A synapse is a specialized structure where two neurons connect, allowing them to pass an electrical or chemical signal to another neuron. It is the point of communication between neurons. The term "synapse" is derived from the Greek word "synapsis," which means "conjunction." The entire process of neural communication revolves around the synapse. When activated, a neuron releases chemicals known as neurotransmitters into the synapse. These neurotransmitters cross the synapse and bind to...
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Related Experiment Video

Updated: Feb 10, 2026

Activating Autophagy by Aerobic Exercise in Mice
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Activating Autophagy by Aerobic Exercise in Mice

Published on: February 3, 2017

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Autophagy at the synapse.

Veronica Birdsall1, Clarissa L Waites2

  • 1Neurobiology and Behavior Graduate Program, Columbia University, United States.

Neuroscience Letters
|May 27, 2018
PubMed
Summary
This summary is machine-generated.

Synapses rely on autophagy, a cellular waste removal process, to clear damaged proteins. This review explores the crucial roles of synaptic autophagy in maintaining neuronal health and function throughout life.

Keywords:
AMPA receptorAutophagyMacroautophagySynapseSynaptic vesicle

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Molecular Biology

Background:

  • Synapses are critical for neuronal communication, requiring precise protein interactions.
  • Synapses are distant from cell bodies, making them vulnerable to proteostasis disruption.
  • Efficient protein clearance mechanisms are essential for synaptic health.

Purpose of the Study:

  • To review recent findings on the roles of synaptic autophagy.
  • To highlight the importance of autophagy in synaptic function.
  • To identify future research directions in synaptic autophagy.

Main Methods:

  • Literature review of emerging studies in synaptic biology.
  • Analysis of research on protein degradation pathways at synapses.
  • Synthesis of current understanding of autophagy's role in neuronal function.

Main Results:

  • Autophagy plays essential roles in synaptic function throughout an organism's life.
  • Emerging research indicates significant involvement of autophagy in synaptic maintenance.
  • Synaptic proteostasis is heavily reliant on regulated degradative mechanisms.

Conclusions:

  • Synaptic autophagy is crucial for neuronal health and function.
  • Further research is needed to fully elucidate the mechanisms and implications of synaptic autophagy.
  • Understanding synaptic autophagy is key to addressing neurological disorders related to protein dysfunction.