In human anatomy, the dorsal interossei (DI) are four muscles in the back of the hand that act to abduct (spread) the index, middle, and ring fingers away from hand's midline (ray of middle finger) and assist in flexion at the metacarpophalangeal joints and extension at the interphalangeal joints of the index, middle and ring fingers.[1]
^"Dorsal Interossei (DI)". Washington University school of Medicin in St.Louis. 2010. Archived from the original on 24 February 2021. Retrieved 9 December 2012.
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thedorsalinterossei (DI) are four muscles in the back ofthehand that act to abduct (spread) the index, middle, and ring fingers away from hand's midline...
digitorum Two intrinsic hand muscles: Fourth lumbrical muscle Third palmar interosseous muscle Note: thedorsalinterosseiofthehand muscles do not have...
muscles Dorsalinterossei Palmar interossei Adductor Pollicis Flexor pollicis brevis (deep head) In thehand, via the superficial branch of ulnar nerve:...
radialis brevis of finger Abductor digiti minimi Dorsalinterosseiofthehandof thumb Abductor pollicis longus Abductor pollicis brevis of femur at hip...
the brachial plexus. The intrinsic muscle groups are the thenar (thumb) and hypothenar (little finger) muscles; theinterossei muscles (four dorsally...
against resistance. This occurs because the ulnar nerve also innervates the palmar and dorsalinterosseiofthehand. Patients with this deficit will become...
sets: 4 Dorsalinterossei - Abduct the digits away from the 3rd digit (away from axial line) and are bipennate. 3 Palmar interossei - Adduct the digits...
(index finger only) of phalanges, at interphalangeal joints Lumbricals ofthehandDorsalinterosseiofthehand Palmar interosseiof thumb Extensor pollicis...
The interphalangeal joints ofthehand are the hinge joints between the phalanges ofthe fingers that provide flexion towards the palm ofthehand. There...
and is reinforced, in this situation, by the tendons oftheInterossei and Lumbricalis. Opposite the first interphalangeal joints this aponeurosis divides...
covers thedorsal surface ofthe first phalanx and is reinforced, in this situation, by the tendons oftheinterossei and lumbricalis. Opposite the first...
In addition, the central group of intrinsic hand muscles give important contributions to human dexterity. The palmar and dorsalinterossei adduct and abduct...
with the third proximal phalanx. The second and third dorsalinterossei muscles attaches to the third metatarsal bone. The second dorsalinterossei from...
phalanges of digits two to five. The plantar interossei adduct and thedorsalinterossei abduct these digits, and are also plantar flexors at the metatarsophalangeal...
dorsalinterossei muscles attaches to the fourth metatarsal bone. The third dorsalinterossei from the medial side ofthe bone and the fourth dorsal interossei...