Related Experiment Video

Updated: Aug 12, 2026

A Rapid Automated Protocol for Muscle Fiber Population Analysis in Rat Muscle Cross Sections Using Myosin Heavy Chain Immunohistochemistry
05:57

A Rapid Automated Protocol for Muscle Fiber Population Analysis in Rat Muscle Cross Sections Using Myosin Heavy Chain Immunohistochemistry

Published on: March 28, 2017

The ultrastruct of normal human muscle in relation to fibre type

M J Cullen, D Weightman

    Journal of the Neurological Sciences
    |May 1, 1975
    PubMed

    More Related Videos

    Fiber Type Identification of Human Skeletal Muscle07:04

    Fiber Type Identification of Human Skeletal Muscle

    Published on: September 22, 2023

    Intact Short, Intermediate, and Long Skeletal Muscle Fibers Obtained by Enzymatic Dissociation of Six Hindlimb Muscles of Mice: Beyond Flexor Digitorum Brevis08:12

    Intact Short, Intermediate, and Long Skeletal Muscle Fibers Obtained by Enzymatic Dissociation of Six Hindlimb Muscles of Mice: Beyond Flexor Digitorum Brevis

    Published on: December 1, 2023

    Related Concept Videos

    Classification of Skeletal Muscle Fibers01:48

    Classification of Skeletal Muscle Fibers

    Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
    Slow-Twitch Muscle Fibers
    Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
    Gross Anatomy of Skeletal Muscles01:12

    Gross Anatomy of Skeletal Muscles

    The connective tissues play a significant role in arranging the muscle fibers into a hierarchical structure that forms a complete muscle. Consider a muscle like the bicep brachii, commonly called the bicep. This muscle comprises thousands of muscle fibers enclosed by a protective layer of connective tissue called the endomysium. The endomysium is primarily composed of reticular fibers, a type of thin collagen fiber. It allows the exchange of nutrients and waste products at the fiber level,...
    Microscopic Anatomy of Skeletal Muscles01:13

    Microscopic Anatomy of Skeletal Muscles

    Skeletal muscle cells, also called muscle fibers, are distinctly elongated, multi-nucleated, slender biological units. They are packed with specialized structures designed to facilitate their primary function, which is contraction.
    The muscle sarcolemma is a plasma membrane enclosing each muscle cell that conducts electrical signals called action potentials. The sarcolemma extends into the cell to form T-tubules, ensuring the neural impulses are uniformly distributed across the entire muscle...
    Types of Skeletal Muscle Fibers01:32

    Types of Skeletal Muscle Fibers

    Skeletal muscles comprise various fibers, each with distinct characteristics and roles in movement and stability. They are mainly categorized into three types — fast-twitch, slow-twitch, and intermediate.
    Fast-twitch fibers
    Fast-twitch fibers, or Type II fibers, are designed for quick, powerful bursts of speed and strength. They reach peak tension within approximately 0.01 seconds following stimulation. Characterized by a large diameter and densely packed myofibrils, these fibers contain...
    Structure and Organization of Smooth Muscles01:13

    Structure and Organization of Smooth Muscles

    Smooth muscle tissue is a type of muscle tissue that can be found lining various vital organs in the human body, including the lungs, blood vessels, digestive tract, and respiratory tract. This type of tissue is responsible for regulating the movements of these organs, playing crucial roles in the functioning of various systems, including the vascular, digestive, respiratory, and urinary systems.
    Structure of smooth muscle cell
    Smooth muscle cells are spindle-shaped with tapering ends and a...
    Fascicle Arrangement in Skeletal Muscles01:25

    Fascicle Arrangement in Skeletal Muscles

    Fascicles are bundles of muscle fibers in a skeletal muscle. Muscle fascicle arrangement is directly associated with the power and range of motion of various muscles. The configuration of these fascicles can vary, leading to different functional outcomes.
    The four primary types of muscle based on fascicle arrangement are: