Insertion
INSERTION
Upper fibres-from maxilla opposite molar teeth. lower fibres-from mandible opposite molar teeth middle fibres-from pterygomandibular raphe.
Origin.originOriginorigin
The origin refers to the muscle attachment that is more stable. The tendon that attaches the muscle to its origin can be called the origin tendon,
the place where the muscle begins.
The fixator of a muscle stabilizes the muscle at the point of origin.
depends on which muscle but the opposite muscle sometimes contracts aswell to stabalize the joint some relaxes ...
The origin of a muscle is where the muscle starts ("the starting point"). The insertion of a muscle is where the muscle ends ("the ending point"). Also, the insertion of the muscle is what moves a lot (contrary of the origin where the muscle mostly stays stationary).
Semimembranosus muscle
Muscle attaches to a non-moving bone at the muscle's origin.
Origin is typically the proximal attachment of a muscle because it is the least moveable. The distal attachment is where a muscle inserts.