関連する実験動画

Updated: Jul 25, 2026

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

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

Published on: January 18, 2011

筋肉繊維の周りの内生電場は,Na+-K+ポンプに依存しています

W J Betz, J H Caldwell, R R Ribchester

    Nature
    |September 18, 1980
    PubMed
    まとめ

    研究者は,骨格筋のエンドプレートにおける新しい生理学的専門性を発見しました. ナトリウムポンプに依存するエンドプレート領域で生成される安定した正電流は,神経と筋肉の相互作用に影響を与える可能性があります.

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    Simultaneous Intracellular Recording of a Lumbar Motoneuron and the Force Produced by its Motor Unit in the Adult Mouse In vivo

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    Contribution of the Na+/K+ Pump to Rhythmic Bursting, Explored with Modeling and Dynamic Clamp Analyses08:34

    Contribution of the Na+/K+ Pump to Rhythmic Bursting, Explored with Modeling and Dynamic Clamp Analyses

    Published on: May 9, 2021

    関連する概念動画

    Action Potentials01:41

    Action Potentials

    Overview
    The Resting Membrane Potential01:21

    The Resting Membrane Potential

    Overview
    Resting Membrane Potential01:24

    Resting Membrane Potential

    The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
    The Inside of a Neuron is More Negative
    The membrane potential of a cell can be measured by inserting a microelectrode into a cell and comparing the charge to a reference electrode in the extracellular fluid. The...
    Resting Potential Decay01:15

    Resting Potential Decay

    The resting membrane potential of a neuron (-70mV) is sustained due to the selective ion permeability of the membrane. At the resting potential, the membrane is slightly permeable to ions like sodium (Na+) and chloride (Cl−) and highly permeable to potassium ions (K+). Differences in the ions' concentration inside the cell compared to the outside are maintained by membrane transport proteins like channels and pumps.
    At rest, the K+ is the main ion that moves across the membrane through...
    Generation of Action Potential in Skeletal Muscles01:24

    Generation of Action Potential in Skeletal Muscles

    Every cell in the body maintains a membrane potential due to an uneven distribution of positive and negative charges across its plasma membrane. The membrane potential is measured in millivolts and quantifies the difference in charge across the membrane.
    Like neurons, muscle cells are also regarded as excitable due to their capacity to change in response to stimuli, primarily due to voltage-gated ion channels embedded in their plasma membranes, which get activated by alterations in the cell's...
    Relaxation of Skeletal Muscles01:29

    Relaxation of Skeletal Muscles

    The period of muscle contraction primarily influences the duration of stimulation at the neuromuscular junction (NMJ), the presence of free calcium ions in the sarcoplasm, and the availability of energy or ATP to support contractions.
    When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open.