The origin is the distal attachment of a muscle
The flexor digitorum profundus is a muscle in the forearm that flexes the fingers and holds the handle.The flexor carpi radialis and extensor carpi radialis longus allow you 'bend' the wrist as you turn the handle.
The tendon that bounds the anatomical snuff box medially is the tendon of the extensor pollicis longus muscle.
The anatomical snuffbox is bordered by the tendons of the extensor pollicis longus and extensor pollicis brevis on the ulnar and radial sides, respectively, and the abductor pollicis longus tendon forms part of its floor. One muscle that does not make up the anatomical snuffbox is the flexor pollicis longus, as it is not involved in the extension of the thumb and lies on the volar side of the forearm. Therefore, while the snuffbox is significant for the tendons involved in thumb extension, the flexor pollicis longus is not part of this structure.
The wrist is bent by the wrist flexor muscles, including the flexor carpi radialis, flexor carpi ulnaris, and palmaris longus. These muscles are responsible for flexing the hand at the wrist joint.
Anatomical snuff box contents are: Abductor Pollicis Longus, Extensor Pollicis Brevis, and Extensor Pollicis Longus. All of these are inervated by the radial nerve.
Extensor Carpi Radialis Longus
There's more than one: flexor carpi radialis palmaris longus flexor carpi ulnaris pronator teres flexor digitorum superficialis (sublimis) flexor digitorum profundus flexor pollicis longus pronator quadratus brachioradialis extensor carpi radialis longus extensor carpi radialis brevis extensor digitorum (communis) extensor digiti minimi (proprius) extensor carpi ulnaris abductor pollicis longus extensor pollicis brevis extensor pollicis longus extensor indicis (proprius) supinator anconeus
There is no action of the carpi radialis longus on the elbow. ?æThe carpi digitalis longus enables?æwrist action, namely the abduction and extension.
flexor carpi radialis, flexor carpi ulnaris, extensor carpi radialis longus, extensor carpi ulnaris
This name implies that it extends the wrist!
There are many muscles in the hand. Here are a few: extensor carpi radialis brevis extensor carpi radialis longus extensor carpi ulnaris extensor digitorum communis extensor indicis proprius extensor digiti minimi abductor pollicis longus extensor pollicis brevis extensor pollicis longus flexor carpi ulnaris flexor digitorum profundus flexor digitorum superficialis flexor carpi radialis flexor carpi ulnaris palmaris longus flexor pollicis longus abductor pollicis brevis flexor pollicis brevis opponens pollicis adductor pollicis palmaris brevis abductor digiti minimi flexor digiti minimi opponens digiti minimi Then each finger has a set of lumbrical muscles and 3 volar and 4 dorsal muscles
They are so many. But main actors are extensor carpi radialis longus and brevis and extensor carpi ulnaris. Others: extensors_digitorum, indicis, digiti minimi, pollicis longus and brevis.
There are around 25 muscles that are used in writing. Intrinsic hand muscles act only the digits: THENAR MUSCLES and ADDUCTOR POLLICIS HYPOTHENAR MUSCLES LUMBRICALES DORSAL INTEROSSEI PALMAR INTEROSSEI Extrinsic thumb muscles that act on the thumb: FLEXOR POLLICIS LONGUS EXTENSOR POLLICIS LONGUS EXTENSOR POLLICIS BREVIS ABDUCTOR POLLICIS LONGUS Extrinsic hand muscles act on the wrist and the digits: EXTENSOR DIGITORUM EXTENSOR INDICIS (PROPRIUS) EXTENSOR DIGITI MINIMI (PROPRIUS) FLEXOR DIGITORUM SUPERFICIALIS FLEXOR DIGITORUM PROFUNDUS Carpal muscles act at the wrist and, in some cases, the elbow: EXTENSOR CARPI RADIALIS LONGUS EXTENSOR CARPI RADIALIS BREVIS EXTENSOR CARPI ULNARIS FLEXOR CARPI RADIALIS FLEXOR CARPI ULNARIS PALMARIS LONGUS
Median Nerve ( starts at C6) Flexor Carpi Radialis, Palmaris Longus Ulnar Nerve ( starts at C7) Flexor Carpi Ulnaris, Flexor Digitorum Profundus Median Nerve ( starts at C7) Flexor Digitorum Superficialis, Flexor Digitorum Profundus Radial Nerve ( starts at C6) Extensor Carpi Radialis Longus, Extensor Carpi Radialis Brevis, Extensor Carpi Ulnaris, Extensor Digitorum Communis, Abductor Pollicis Longus, Extensor Pollicis Longus, Extensor Pollicis Brevis Median Nerve ( starts at C8) Flexor Pollicis Longus, Abductor Pollicis Brevis, Flexor Pollicis Brevis, Opponens Pollicis, Lumbricals Ulnar Nerve ( starts at C8) Adductor Pollicis, Abductor Digiti Minimi, Flexor Digiti Minimi, Opponens Digiti Minimi, Lumbricals, Dorsal interossei, Palmar interossei
Extensor digitorum longus (lateral 4 toes), Extensor digitorum brevis (medial 4 toes) and extensor hallucis longus (big toe only)
When you reach up with your arms there are a number of bones and muscles that you use to do this action. Bones involved: Scapula, Clavical, humerous, Ulna, Radius, metacarpals, carpals, and phlangeies. Muscles involved: Pectorials, Rectus Adominus, Deltoid, Biceps Braci, Triceps, Brachioradialis, Extensor Carpi Radialis Longus, Anconeus (Cubitalis Rolani), Flexor Carpi Ulnaris, Extensor Carpi Ulnaris, Extensor Digitorum, Extensor Carpi Radialis Brevis, Abductor Pollicis Longus, Extensor Pollicis Brevis, Extensor Retinaculum.
extensor hallicus longus