Ulnar Nerve
Ulnar Nerve - Related Videos
04:56
In Vivo Electrophysiological Measurement of the Rat Ulnar Nerve with Axonal Excitability Testing
0 Views •
Cited by 3 •
2018
Axonal excitability techniques provide a powerful tool to examine pathophysiology and biophysical changes that precede irreversible degenerative events. This manuscript demonstrates the use of these techniques on the ulnar nerve of anesthetized rats.
02:50
Toluidine Blue Staining of Peripheral Nerve Sections: A Technique to Stain Myelinated Nerve Fibers For Peripheral Nerve Structure Visualization
0 Views •
2025
This video demonstrates the staining technique of resin-embedded, osmium tetroxide-treated rat peripheral nerve sections using toluidine blue. The stained nerve sections help visualize the fine structures of peripheral nerves.
02:00
Vagus Nerve Stimulation via Chronically Implanted Peripheral Nerve Cuff Electrodes in Rats
0 Views •
2025
Source: Sanchez, C. A., et al. Preparation of Peripheral Nerve Stimulation Electrodes for Chronic Implantation in Rats. J. Vis. Exp. (2020).This video demonstrates vagus nerve stimulation in an awake rat. A rat with an implanted chronic peripheral nerve cuff electrode and trained in a lever press task is connected to a stimulus generator via an implanted head cap. The vagus nerve is stimulated immediately after each successful lever press, resulting in the expansion of the motor map.
03:13
Construction of a Composite Regenerative Peripheral Nerve Interface in a Rat Model of Nerve Injury
0 Views •
2025
Source: Svientek, S. R., et al. Fabrication of the Composite Regenerative Peripheral Nerve Interface (C-RPNI) in the Adult Rat. J. Vis. Exp. (2020).This video demonstrates the surgical construction of a composite regenerative peripheral nerve interface (C-RPNI) in a rat model of peripheral nerve injury. The procedure involves attaching a transected peroneal nerve to a muscle graft and overlaying it with a dermal skin graft to promote nerve regeneration. Over time, motor and sensory neurons...
04:42
In Vivo Biomechanical Testing of Nerve: A Procedure for Biomechanical Analysis of Brachial Plexus Nerve Injury in a Neonatal Pig Model
0 Views •
2025
In this video, we demonstrate the biomechanical testing of the brachial plexus nerve in a pig model to measure the threshold tensile strength of the nerve when subjected to stretching. This technique helps in determining the structural and mechanical properties of the nerve.
FAQs
Its mixed structure allows separate neural functions to travel together. Motor fibers carry commands to muscles in the forearm and hand, while sensory fibers relay information from the little finger and adjacent ring-finger region. Studying these parallel pathways shows how one peripheral nerve participates in both voluntary movement and touch perception.
The C8 and T1 roots provide the principal spinal contribution to this nerve through the medial cord of the brachial plexus. This connection links upper-limb tissues with the spinal cord and helps explain how signals originating in different parts of the neural pathway contribute to coordinated forearm and hand function.
This course provides an important anatomical landmark for following the nerve from the arm toward the forearm and hand. After passing behind the medial epicondyle, it continues toward branches serving forearm and intrinsic hand muscles, as well as its sensory territory. Its location therefore helps connect anatomy with clinical evaluation of compression.
Clinical assessment can examine nerve conduction and possible compression along its pathway. These findings help determine whether signal transmission is being affected and support diagnosis of ulnar neuropathy. The results also have practical value because they can contribute to decisions about appropriate treatment, rather than relying only on anatomical knowledge or reported symptoms.
It offers a focused model for studying how neural signals connect the spinal cord with peripheral tissues. Investigators can relate its root origin, plexus organization, branching pattern, motor targets, and sensory territory to broader principles of movement, touch, and communication within the nervous system. This makes it useful for linking anatomy with function.
Assessment should consider both motor and sensory functions rather than treating the nerve as a single-purpose pathway. Changes involving forearm or intrinsic hand muscle control may provide motor information, while altered sensation in the little finger or adjacent ring-finger region may provide sensory information. Comparing these domains can help characterize ulnar neuropathy.