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Feb 23, 2024 · In simple terms, muscle insertion (also known as distal or finish point) refers to the location where a muscle attaches to a bone that typically moves when the muscle contracts. It’s the end of the muscle furthest away from the center of your body. By contracting, the muscle pulls on this bone, leading to movement.
Nov 3, 2023 · Musculus orbicularis oris. Synonyms: none. Orbicularis oris is a complex circular muscle that surrounds the orifice of the mouth and forms the majority of the lips. It belongs to a large group of muscles of facial expression called the buccolabial group. Besides orbicularis oris, this group also contains the levator anguli oris, levator labii ...
Nov 3, 2023 · Buccinator has a number of origin points which is the basis for subdividing the muscle fibers into superior, inferior and posterior parts . This muscle is the main muscle of the cheek, that provides it with structure and tightness. It compresses the cheek against the molar teeth, which is important to keep the food bolus central in the oral ...
If the place is a bone that remains immobile for an action, the attachment is called an origin. If the place is on the bone that moves during the action, the attachment is called an insertion. The triceps brachii happens to have four points of attachment: one insertion on the ulna and three origins (two on the humerus and one on the scapula).
Tendons are situated between bone and muscle s and are bright white in colour, their fibro-elastic composition gives them the strength require to transmit large mechanical forces. Each muscle has two tendons, one proximally and one distally. The point at which the tendon forms attachment to the muscle is also known as the myotendinous junction ...
Nov 3, 2023 · Synonyms: Adduction of hip, Adductio coxae. The gluteus maximus muscle exhibits four actions on the hip joint; extension, external rotation, abduction and adduction of the thigh. When its proximal attachment is fixed, gluteus maximus acts as the main extensor of the hip joint, pulling the shaft of the femur posteriorly.
Dec 28, 2023 · Summary. Muscle insertion is the point where a muscle attaches to the moveable bone in the joint. This is usually the part of the joint further from the center of the body. Muscles typically originate at the body part closest to the trunk, known as the origin. The muscle crosses the joint and attaches to the insertion point via tendons.
