Related Experiment Video

Updated: Oct 23, 2026

Historical View and Physiology Demonstration at the NMJ of the Crayfish Opener Muscle
11:56

Historical View and Physiology Demonstration at the NMJ of the Crayfish Opener Muscle

Published on: November 9, 2009

Fine structure of the electrotonic synapse of the lateral giant axons in a crayfish (Procambarus clarkii)

G Zampighi, F Ramón, W Durán

    Tissue & Cell
    |January 1, 1978
    PubMed

    More Related Videos

    Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises16:16

    Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises

    Published on: January 18, 2011

    Modeling Biological Membranes with Circuit Boards and Measuring Electrical Signals in Axons: Student Laboratory Exercises13:56

    Modeling Biological Membranes with Circuit Boards and Measuring Electrical Signals in Axons: Student Laboratory Exercises

    Published on: January 18, 2011

    Related Concept Videos

    Action Potentials01:41

    Action Potentials

    Overview
    The Synapse02:47

    The Synapse

    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.
    Synaptic Signaling01:09

    Synaptic Signaling

    Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
    Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
    The presynaptic neuron fires an action potential that...
    Action Potential01:14

    Action Potential

    Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
    Membrane potential in neurons
    Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
    Electrical Synapses01:28

    Electrical Synapses

    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...
    Action Potential01:14

    Action Potential

    Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
    Membrane potential in neurons
    Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...