MBLEx Review: Interactions of Skeletal Muscles; Agonist, Antagonist, Synergist, & Fixator

September 3rd. 2022, 11:46am

0:00 Muscles NEVER work alone
0:28 Agonist, Antagonist, Synergist, Fixator
1:28 Example of flexion at the elbow, Agonist and Antagonist movers
2:14 Example of Extension at the elbow, Agonist and Antagonist movers
3:13 Synergist – Helpers
5:10 Fixator – Stabilizer
7:20 Check your understanding

This video explains how the muscles interact with each other, in other words, when an certain action takes places in the body, there are multiple (other) muscles that are responsible for the very movements of our skeletal and muscular systems….

I would highly encourage you to know what an agonist, antagonist, synergist, and fixator are before you go into the MBLEx (you may very well see them on there).

As always, you are welcome to comment any questions you may have concerning the material covered today, or the material you would like me to cover in our next video…

Please share and subscribe and give me thumbs up if this video was helpful, so that I can continue growing and reaching other aspiring therapist to pass their MBLEx.

Thank you,
Respectfully

ANSWERS TO QUICK QUIZ:
Extension at the elbow: The prime mover (AGONIST) are the TRICEPS BRACHII
Flexion at the elbow: The opposing mover (ANTAGONIST) are also the TRICEPS BRACHII
Synergist are all the muscles that work together to successfully achieve an action, such as extension at the elbow, primary mover; triceps brachii and synergist; anconeus
Fixators help to stabilize the proximal end (the origin of the contracting muscle) so the distal limb effectively moves, without moving the proximal end of the muscle.