What are the dorsal interassei?

dorsal interossei are muscles found between the costims of the hand and the leg. Specifically, they are located between metacarples, long bones of the palm and between metatars, bones of the foot under the fingers. In the hands and legs are two sets of Interassei, Palmar/Plantar Interassei and dorsal interossei, but only dorsal interossei are inserted between the bones. These muscles create the action of kidnapping or spread their fingers and fingers away from the middle line of the hand and foot. In hand, this middle line is an intermediary, while in the leg it is the second finger. This means that they come from two separate points - one head comes on the side of the metacarpal under one finger, for example, while the other head comes from the neighboring side of the metacarpal under another finger. Both heads converge in the middle of the space between the bone, with the fibers of each fishing towards the center line of the muscles. They create a single muscle that narrows when it approaches its point inserting on the proximal Phalange, the closest bone of the finger or the tip above it.

A total of four dorsal interossei occupy space between the bones of the hands and the legs. There is one muscles between the thumb and the forefinger, one between the index and the middle fingers, one between the middle and the ring finger and one between the ring and the pinks. As such, two are found on one side of the middle finger and two on the other, the middle finger forming a middle line. When the muscles are withdrawn at the same time, in other words, the ring and pinks have spread from the middle finger in one direction, while the thumb and forefinger spread in the opposite direction and the middle finger does not move.

There are also dorsal interossei legs between the first or large finger and the second tip, between the second and the third fingers, between the third and fourth peaks and between the fourth and fifth or pindy toe. Only one on the inside of the middle line of the foot is found here, while three are found on the other side. When these muscles are withdrawing, they pull their fingers from the second tip, even if they aremuch less movement than the kidnapping of the fingers. They also contribute to the flexion of the tip or to the descending ripple of the fingers.

It should be noted that each individual interosseous angles towards the middle line of the hand or foot. Therefore, the muscles between the index and the middle fingers are attached to the middle finger, while the muscles between the middle and the ring also attach to the middle finger. Similarly, to the fourth tip, the muscles between the fourth and fifth finger and the third finger to the third finger, while those between the first and second fingers connect to the second tip.