Related Experiment Video
Updated: Jun 24, 2026

Collection of Skeletal Muscle Biopsies from the Superior Compartment of Human Musculus Tibialis Anterior for Mechanical Evaluation
Published on: September 27, 2020
[Experimental research of neuromuscular compartments and muscular architecture of forearm skeletal]
Benli Liu1, Antang Liu, Hua Jiang
1Department of Plastic Surgery, Changzheng Hospital, the Second Military Medical University, Shanghai, 200003, PR China.
Objective:
To reveal morphologic features and physiological function in compartments of human forearm muscles, and investigate the possibility of transplantation of neuromuscular compartments.
Methods:
Sohier's neural staining technique was used to study the nerve branches distribution of forearm skeletal muscles in 5 human cadavers (aging 26-39 years), including flexor carpi radialis, flexor carpi ulnaris (FCU), extensor carpi radialis brevis, extensor carpi ulnaris, palmaris longus (PL), flexor pollicis longus, pronator teres (PT). According to Wickiewicz's methods, Ulnar compartment and radial compartment of forearm skeletal muscles above mentioned from 10 human cadavers were used to study the muscle architectural features.
Results:
Each nerve branches run into the ulnar compartment and radial compartment respectively. There was statistically significant difference between the two physiological cross section areas (PSCA) of each neuromuscular compartment from forearm muscles (P < 0.05). Among them, PSCA of ulnar compartment of FCU was the largest. The PSCA of ulnar compartment of PT was the smallest. There was no statistically difference between the ratio (PSCA/muscle wet weight) of each neuromuscular compartment from forearm muscles (P > 0.05). As the ratio of PSCA to the muscle fiber length, the ulnar compartment of PT and the two compartments of PL had the highest one while the ulnar compartment of FCU had the smallest; and there was no statistically difference among the other neuromuscular compartments (P > 0.05).
Conclusion:
Each of forearm muscles be divided into ulnar compartment and radial compartment and they have their own nerve supply. And there are significant differences in the physiological function in compartments of forearm muscles, which can be references in muscular compartment transplantation.
More Related Videos
09:57Obtaining Quality Extended Field-of-View Ultrasound Images of Skeletal Muscle to Measure Muscle Fascicle Length
Published on: December 14, 2020
08:41Dissection of Single Skeletal Muscle Fibers for Immunofluorescent and Morphometric Analyses of Whole-Mount Neuromuscular Junctions
Published on: August 14, 2021
Related Concept Videos
Muscles that Move the Forearm
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
Microscopic Anatomy of Skeletal Muscles
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...
Muscles of the Forearm that Move the Hand and Fingers
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi radialis,...
Gross Anatomy of Skeletal Muscles
Fascicle Arrangement in Skeletal Muscles
The four primary types of muscle based on fascicle arrangement are:
Classification of Skeletal Muscle Fibers
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...