What is interassei?
interossei are the inner muscles of the hand on both sides of the metacarpals, long bones placed under each finger. They fill the gap between each metacarpal bone, with three pallets and four on the back of the hand. Like the invisible straps between the fingers, these muscles are responsible for the spread of the fingers and their joining. Palmar Interassei moves his fingers together in the direction of the middle finger, while the dorsal interossei moves his fingers away from the middle finger, spreading his hand.
It is closer to the palm side of each metacarpal rather than between these bones, each palmar interosseous is a unipenate muscle. UNIPENNATE refers to the fact that it comes along the entire length of the metacarpal bone with fibers that spread outward and down as bristles on the toothbrush than from a single point of the origin. These fibers eventually converge at the opposite end of metacarpal and create a small tendon that PRIt rotates the metacarpofalangal joint to insert the proximal end of the phalanx or finger of the bone just above the appropriate muscle metacarpal. In other words, interosseous, which starts on the second metacarpal, just below the index finger, connects to the same side of the other phalanx. In addition, Palmar Interassei is closest to the middle finger to stretch them in, so they are located on the middle side of the metacarpal and those on the ring and a small finger are located on the side of their appropriate metacarpals.
On the other hand, the dorsal interossei is located between the metacarpal bones. Each dorsal interosseous muscles have two heads - one connects to the metacarpal on one side of the muscle and the other connects to the metacarpal on the other - and as such is considered to be biptennate, the tendon runs down in the middle. This tendon is a place where muscle fibers converge on both sides. As with any Palmar Interosseous intersects metacarpofalgeal joint andInserts on the proximal end of the neighboring phalanx, which is closest to the middle finger. For example, the dorsal interosseous muscle between the thumb and the index finger puts the index finger on the phalanx, the other phalanx, while the interosseous muscles between the pinks and the ring fingers insert on the phalanx of the ring,