This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Interosseous muscles of the hand" – news · newspapers · books · scholar · JSTOR(December 2009) (Learn how and when to remove this message)
Interosseous muscles of the hand
Details
Origin
Dorsal: metacarpal bones 1 to 5. Palmar: metacarpal bones of digits 2, 4, 5
Insertion
Dorsal: bases of proximal phalanges and extensor expansions of digits 2 to 4. Palmar: base of proximal phalanx and extensor expansion of the same digit from which it originated.
Nerve
deep branch of the ulnar nerve
Actions
Dorsal: Abduct digits. Palmar: Adduct digits.
Anatomical terms of muscle
[edit on Wikidata]
The interosseous muscles of the hand are muscles found near the metacarpal bones that help to control the fingers. They are considered voluntary muscles.
They are generally divided into two sets:
4 Dorsal interossei - Abduct the digits away from the 3rd digit (away from axial line) and are bipennate.
3 Palmar interossei - Adduct the digits towards the 3rd digit (towards the axial line) and are unipennate.
This is often remembered by the mnemonic PAD-DAB, as the Palmar interosseous muscles ADduct, and the Dorsal interosseous muscles ABduct. The axial line goes down the middle of the 3rd digit, towards the palm of the hand (it's an imaginary line).
Both sets of muscles are innervated by the deep branch of the ulnar nerve.[1]
^Tank, Patrick W. (2009). Grant's Dissector (14th ed.). Philadelphia: Wolters Kluwer Health/Lippincott, Williams & Wilkins. pp. 45–46. ISBN 0781774314.
and 29 Related for: Interosseous muscles of the hand information
metacarpals. The dorsal interosseousmuscles are bipennate, with each muscle arising by two heads from the adjacent sides ofthe metacarpal bones, but more...
that themuscle is most likely a de novo structure derived from the adductor pollicis. Musclesofhand. Cross section. Interosseousmusclesofthehand Dorsal...
opposition ofthe thumb. Themuscles acting on the thumb can be divided into two groups: The extrinsic handmuscles, with their muscle bellies located in the forearm...
Common interosseous artery Posterior interosseous artery Anterior interosseous artery Interosseous membrane of forearm Annular ligament of ulna The forearm...
the medial four digits ofthehand. Extensor digitorum is innervated by the posterior interosseous nerve, which is a branch ofthe radial nerve. The extensor...
and theinterosseousmuscles. The oblique head (Latin: adductor obliquus pollicis) arises by several slips from the capitate bone, the bases ofthe second...
muscles are three muscles located between the metatarsal bones in the foot. The three plantar interosseousmuscles are unipennate, as opposed to the bipennate...
surface ofthe ulna and from theinterosseous membrane, next to the origins of abductor pollicis longus and extensor pollicis brevis. Passing through the third...
The anterior interosseous nerve (volar interosseous nerve) is a branch ofthe median nerve that supplies the deep muscles on the anterior ofthe forearm...
In the present table, using statistical counts ofthe instances of each muscle, and ignoring gender-specific muscles, there are 761 skeletal muscles. Sometimes...
are the thenar (thumb) and hypothenar (little finger) muscles; theinterosseousmuscles (four dorsally and three volarly) originating between the metacarpal...
human anatomy, the abductor pollicis longus (APL) is one ofthe extrinsic musclesofthehand. Its major function is to abduct the thumb at the wrist. Its...
may cause compression ofthe anterior interosseous nerve. It arises also from the adjacent part oftheinterosseous membrane ofthe forearm, and generally...
the posterior interosseous nerve. It pierces the posterior extensor muscles and comes to lie between superficial and deep musclesofthe back ofthe forearm...
over time as the paralysed first dorsal interosseousmuscle atrophies, leaving a prominent hollowing between the thumb and forefinger. The ulnar nerve...
The lumbricals are intrinsic musclesofthehand that flex the metacarpophalangeal joints, and extend the interphalangeal joints. The lumbrical muscles...
mostly the extensor musclesofthehand. The radial nerve arises from the posterior cord ofthe brachial plexus. The posterior cord takes nerves from the upper...
popliteus muscle are attached to the bones ofthe foot. The tibia and fibula and theinterosseous membrane separate these muscles into anterior and posterior...
via the anterior interosseous artery.[citation needed] Pronator quadratus muscle is innervated by the anterior interosseous nerve, a branch ofthe median...
The posterior interosseous artery (dorsal interosseous artery) is an artery ofthe forearm. It is a branch ofthe common interosseous artery, which is...
responsible for the dorsiflexion ofthe foot, or flexors, responsible for the plantar flexion. These muscles can also classified by innervation, muscles supplied...
of arm, forearm, and hand, and terminates by supplying themusclesofthehand. After receiving inputs from both the lateral and medial cords ofthe brachial...
Global Information