Synergist Muscles
Synergist Muscles - Related Videos
01:33
Synergistic Photobiomodulation with a Dual-Wavelength Laser in an In Vitro Disease Model
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2025
Divide the transwell system into five groups that undergo various treatments.The first group serves as the control and consists of a co-culture of neuroblastoma and microglia cells.In the second group, treat the co-culturer with fibrillar β-amyloid (fAβ) alone. fAβ induces damage in neuroblastoma cells.In the third group, treat neuroblastoma cells with an 808-nanometer laser, then co-culture them with untreated microglia.The laser reduces oxidative stress, improving neuronal survival.In the...
02:25
Synergistic Effect of Intracranial and Intraperitoneal Delivery of Analgesic Drugs on Thermal Pain Response in a Rat
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2025
Source: Martinez, E., et al. Intracranial Pharmacotherapy and Pain Assays in Rodents. J. Vis. Exp. (2019).This video demonstrates the intracranial administration of an analgesic drug in an anesthetized rat with a pre-implanted guide cannula in the prefrontal cortex. An additional analgesic drug is co-administered intraperitoneally. Following recovery, the rat’s thermal pain response is assessed using Hargreave’s apparatus, where paw withdrawal latency is measured to evaluate the analgesic...
14:02
Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles
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Cited by 54 •
2012
We describe a method to directly measure muscle force, muscle power, contractile kinetics and fatigability of isolated skeletal muscles in an in vitro system using field stimulation. Valuable information on Ca2+ handling properties and contractile machinery of the muscle can be obtained using different stimulating protocols.
01:23
Synergistic Antimicrobial Effect of Membrane-Targeting Compounds on Antibiotic-Resistant Bacteria
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2026
Take suspensions of an antibiotic-resistant strain of a pathogenic bacterium.Treat one suspension with a short, membrane-disrupting antibiotic compound and the other with both the short compound and a longer, membrane-intercalating compound.Incubate both suspensions with agitation. These compounds mimic the lipid bilayer structure, enabling their spontaneous insertion into bacterial membranes.The short compound spans only part of the membrane’s thickness, creating a structural mismatch. This...
14:36
Evaluation of Muscle Function of the Extensor Digitorum Longus Muscle Ex vivo and Tibialis Anterior Muscle In situ in Mice
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Cited by 73 •
2013
Changes in limb muscle contractile and passive mechanical properties are important biomarkers for muscle diseases. This manuscript describes physiological assays to measure these properties in the murine extensor digitorum longus and tibialis anterior muscles.
FAQs
Support may occur through direct assistance or through control of another joint. A muscle can add force to the prime mover’s intended action, while another limits movement at a nearby joint or keeps the motion aligned. These distinct contributions allow the movement to remain effective without requiring every participating muscle to perform the same mechanical role.
A muscle may produce the desired movement while also creating an unwanted action. A synergist can counter that secondary action, allowing the combined muscle activity to direct force more precisely. This coordination matters when movement must stay controlled across nearby joints, because unchecked secondary actions could alter the intended path or reduce mechanical efficiency.
The outcome depends on how the muscles’ actions combine, not simply on the force produced by one muscle. Assistance can increase the useful component of movement, while stabilization and neutralization reduce competing motions. Consequently, analyzing a muscle in isolation may miss how the full group controls direction, joint behavior, and the quality of the movement.
Analysis begins by identifying the prime mover and then examining how other muscles affect the same movement and nearby joints. The investigator can distinguish direct assistance from joint stabilization or neutralization of unwanted actions. This framework helps explain whether a movement is well coordinated and identifies which aspect of muscle cooperation may influence control or mechanical strain.
During posture or exercise, coordinated muscle groups help maintain intended alignment while force is produced. A prime mover may require assistance, and nearby-joint stabilization can prevent movement from drifting into an unwanted direction. Examining these relationships helps explain why technique depends on more than the strength or activity of a single muscle.
Rehabilitation can focus on restoring balanced coordination among muscles rather than treating each muscle as an isolated force producer. Reestablishing assistance, stabilization, and neutralization can improve control of the intended movement. This coordinated approach is relevant because better balance among muscle actions may improve movement efficiency and reduce mechanical strain during functional activity.