Related Experiment Video

Updated: Oct 6, 2026

Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles
14:02

Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles

Published on: November 1, 2012

[The role of the sympathoadrenal system in the development of acute muscle fatigue]

N A Makarenko

    Likars'Ka Sprava
    |May 1, 1995
    PubMed

    More Related Videos

    Skeletal Muscle Neurovascular Coupling, Oxidative Capacity, and Microvascular Function with 'One Stop Shop' Near-infrared Spectroscopy09:04

    Skeletal Muscle Neurovascular Coupling, Oxidative Capacity, and Microvascular Function with 'One Stop Shop' Near-infrared Spectroscopy

    Published on: February 20, 2018

    Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer07:22

    Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer

    Published on: February 20, 2020

    Related Concept Videos

    The Sympathetic Nervous System01:25

    The Sympathetic Nervous System

    Overview
    Muscle Recovery and Fatigue01:24

    Muscle Recovery and Fatigue

    Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective response...
    Sympathetic Activation01:16

    Sympathetic Activation

    The sympathetic division can influence tissues and organs by releasing norepinephrine at peripheral synapses and distributing epinephrine and norepinephrine through the bloodstream. In times of crisis or stress, sympathetic activation occurs, which is regulated by sympathetic centers in the hypothalamus. As a result, sympathetic activation prepares the body for physical exertion, rapid ATP production, and heightened alertness, allowing individuals to respond effectively to challenging or...
    Hormones of the Adrenal Glands01:31

    Hormones of the Adrenal Glands

    Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
    The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and corticosterone...
    Physiological Foundation of Stress01:24

    Physiological Foundation of Stress

    Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
    Role of the Sympathetic Nervous System
    Adrenaline triggers the...
    Stress Response System01:21

    Stress Response System

    The stress response system, also known as the fight-or-flight response, is the body's automatic physiological reaction to perceived threats. Hans Selye introduced the concept of General Adaptation Syndrome (GAS) to describe the predictable pattern of changes that occur in response to stress. GAS consists of three sequential stages: alarm, resistance, and exhaustion. This model helps explain how chronic stress can contribute to health problems.
    Alarm stage
    In the alarm stage, the body's initial...