Thats just the main groups I reccomend, knocking out a big part of it. You can group anything your comfortable with that has the same function.
Also I recomend the whole time your studying just every few sessions learn a new muscle, you want to absorb the knowledge overtime and not cram it. Pass it for now and just hit it now and then to develop a solid understanding that will last.
Also make sure to act out the movements , and visualize why your back would be arching, what muscles are in that area? Ect.
Your probably going blank because your making it all mental, on a client youll SEE their lower back arch and remember " Oh thats caused by a ovetactive Latissimus Dorsi , Erector Spinae or Hip Flexor Complex.
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