An aponeurosis is a large sheet of tendon. It depends on which one you are referring to as to origin and insertion. The thoracolumbar aponeurosis, for example, has many insertions, mainly on the latissimus dorsi muscle and its main origin is the spine and sacrum.
The bicipital aponeurosis is the connective tissue that comes from the distal insertion of the biceps. It helps strengthen the area at the front of the elbow.
I think you may be talking about origin and insertion points which are the two points of attachment for a muscle. The origin is attached to the immovable (or less movable) bone. The insertion is attached to the movable bone. The insertion always moves towards the origin.
The end of the muscle that is attached to the stationary bone is the point of origin. The muscle end that is attached to the moving bone is the point of insertion, and the action is what the muscle actually does.
It inserts, by means of a tendon, into radial tuberosity on the radius. And then by an aponeurosis, bicipital aponeurosis, which ‎‏fuses‏ ‏with the adjoining deep fascia.
The external abdominal obliques are on both sides of your torso. They run diagonally from external surfaces of ribs 5-12 (origin) to the anterior illiac crest and abdominal aponeurosis (insertion).
The two attachment points are the origin and insertion. The origin is the immovable (or slightly moveable point. The insertion is the movable point. The insertion always moves towards the origin.
difference between the origin bendon and the insertion tendon
the insertion is more moveable.
Reverse origin and insertion refers to the changing of the attachment points of a muscle. When the origin and insertion of a muscle are reversed, the muscle's previous insertion point now becomes the origin, and vice versa. This can have an impact on the muscle's function and movement.
Insertion
Origin is relatively fixed, while the insertion moves in most cases
It is the fascia found on the last 6 Thoratic vertebrae. It is part of the origin of the Latissimus Dorsi.