Related Experiment Video

Updated: Feb 19, 2026

Quantification of Subcellular Glycogen Distribution in Skeletal Muscle Fibers using Transmission Electron Microscopy
08:32

Quantification of Subcellular Glycogen Distribution in Skeletal Muscle Fibers using Transmission Electron Microscopy

Published on: February 7, 2022

4.7K

Mechanism for glycogenolysis in nonexercising human muscle during and after exercise

G Ahlborg

    The American Journal of Physiology
    |May 1, 1985
    PubMed

    More Related Videos

    Measurement of Insulin- and Contraction-Stimulated Glucose Uptake in Isolated and Incubated Mature Skeletal Muscle from Mice08:01

    Measurement of Insulin- and Contraction-Stimulated Glucose Uptake in Isolated and Incubated Mature Skeletal Muscle from Mice

    Published on: May 16, 2021

    6.7K
    Human Skeletal Muscle Biopsy Procedures Using the Modified Bergström Technique07:20

    Human Skeletal Muscle Biopsy Procedures Using the Modified Bergström Technique

    Published on: September 10, 2014

    43.8K

    Related Concept Videos

    Metabolic States of the Body: The Postabsorptive State01:18

    Metabolic States of the Body: The Postabsorptive State

    The postabsorptive state usually starts about four hours after a meal and lasts until the next meal is eaten. During this time, the digestive system stops absorbing nutrients, and the body uses stored energy reserves to maintain stable blood glucose levels.
    Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
    1.4K
    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...
    4.4K
    Energy Supply for Muscle Contraction01:25

    Energy Supply for Muscle Contraction

    Skeletal muscle fibers have the unique ability to switch between rest and contraction states, using different sources of ATP for energy. The contraction cycle and Ca2+ transport back into the sarcoplasmic reticulum for relaxation require significant ATP. However, the ATP reserves in muscle fibers are limited and can only sustain contractions for a few seconds. Additional ATP production becomes necessary for prolonged contractions. As a result, muscle fibers generate ATP through various sources,...
    5.9K
    Metabolic States of the Body: Fasting and Starvation01:24

    Metabolic States of the Body: Fasting and Starvation

    During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
    3.0K
    What is Glycolysis?00:56

    What is Glycolysis?

    Overview
    Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
    178.7K
    Glucose Homeostasis: Regulation of Blood Glucose01:02

    Glucose Homeostasis: Regulation of Blood Glucose

    Carbohydrates consumed through foods are converted into glucose, a crucial energy source for the body. In the prandial state, high blood glucose levels stimulate the secretion of insulin from the pancreas. Insulin inhibits hepatic glucose production and stimulates glucose uptake and metabolism by muscle and adipose tissue. The excess glucose is converted into glycogen and stored in the liver and muscles.
    During fasting, when blood glucose levels are low, the pancreas secretes glucagon. it...
    4.5K