Pectoralis loj yog cov leeg uas ua haujlwm zoo li lub xub pwg flexion… Lub cheeb tsam nruab nrab ntawm cov leeg deltoid yog qhov tseem ceeb txav rau caj npab abduction. Lub pectoralis loj ua raws li tus antagonist rau nruab nrab deltoid anteriorly, whilst lub latissimus dorsi ua tus antagonist posteriorly.
Cov nqaij ntshiv twg yog qhov tseem ceeb txav?
Cov nqaij uas yog Prime Movers
- Pectoralis Major. Tej zaum koj yuav paub cov pectoralis loj xws li "pectorals" lossis txawm tias tsuas yog "pecs."
- Deltoid. Koj tuaj yeem txav koj lub xub pwg pob qij txha ua tsaug rau cov leeg deltoid hauv lawv txhua tus.
- Latissimus Dorsi. …
- Gluteus Maximus. …
- Quadriceps.
Cov leeg twg yog qhov tseem ceeb txav ntawm lub xub pwg?
Glenohumeral Joint Muscles
– Cov sternal thiab costal feem ua haujlwm ua ib chav tsev thiab cog lus kom ntev lub xub pwg. - Raws li tag nrho, pectoralis lojyog qhov tseem ceeb txav hauv glenohumeral adduction, sab hauv kev sib hloov, thiab kab rov tav flexion.
Dab tsi ua rau tus deltoid ua qhov tseem ceeb txav?
Thaum tag nrho nws cov fibers cog lus ib txhij, lub deltoid yog tus thawj txav ntawm caj npab abduction raws lub dav hlau pem hauv ntej Lub caj npab yuav tsum tau hloov kho rau lub deltoid kom muaj txiaj ntsig siab tshaj plaws. Qhov no ua rau lub deltoid ib qho antagonist nqaij ntawm lub pectoralis loj thiab latissimus dorsi thaum lub caj npab adduction.
Cov leeg twg hauv qab no yog qhov tseem ceeb hauv kev supination?
Function. Lub luag haujlwm tseem ceeb ntawm biceps brachii yog flexion ntawm lub luj tshib thiab supination ntawm lub forearm. Qhov tseeb, nws yog tus thawj txav ntawm forearm supination.
