What is a origin of a muscle ? and a dorsiflexion ? in medical term

Origin of a muscle is where the muscle attaches to immovable bone.  it is the more fixed, central, or larger attachment of a muscle. Dorsiflection is when your big toe is pointing upwards toward you face. flexion in a dorsal direction especially : flexion of the foot in an upward direction

The origin of a muscle is the point at which a muscle is attached to a fixed bone. Dorsiflexion is the flexion in a dorsal direction.

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