Muscles of the forearm and hand – attachments
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Origin: FLEXOR CARPI RADIALIS, PALMARIS LONGUS, FLEXOR CARPI ULNARIS[a] These muscles originate on the medial epicondyle by way of the common flexor tendon.
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Insertion: FLEXOR CARPI RADIALIS[a] This muscle inserts on the anterior aspects, base of metacarpal II, (sometimes III).
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Insertion: PALMARIS LONGUS[a] This muscle inserts on many bones via palmar aponeurosis.
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Insertion: FLEXOR CARPI ULNARIS[a] This muscle inserts on the pisiform, hamate, anterior aspect, base of metacarpal V.
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Origin: EXTENSOR CARPI RADIALIS LONGUS[a] This muscle originates on the lateral supracondylar ridge.
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Insertion: EXTENSOR CARPI RADIALIS LONGUS[a] This muscle inserts on the base of metatarsal II.
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Origin: EXTENSOR CARPI RADIALIS BREVIS, EXTENSOR CARPI ULNARIS, EXTENSOR DIGITORUM[a] These muscles originate on the lateral epicondyle by way of common extensor tendon.
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Insertion: EXTENSOR CARPI RADIALIS BREVIS[a] This muscle inserts on the posterior aspect, base of metacarpal III.
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Insertion: EXTENSOR CARPI ULNARIS[a] This muscle inserts on the posterior aspect, base of metacarpal V.
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Origin: FLEXOR DIGITORUM SUPERFICIALIS[a]This finger flexor originates on the medial epicondyle/humerus, anterior radius and ulna.
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Insertion: FLEXOR DIGITORUM SUPERFICIALIS[a] This muscle inserts onto both sides of the proximal and middle phalanges of the four medial digits, creating a bridge for the deeper finger muscles.
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Origin: FLEXOR DIGITORUM PROFUNDUS[a] This flexor originates on the anterior, proximal ulna.
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Insertion: FLEXOR DIGITORUM PROFUNDUS[a] This muscle inserts on the distal phalanges, palmar surface.
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Origin: FLEXOR POLLICIS LONGUS[a] This thumb muscle originates on the Anterior radius.
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Insertion: FLEXOR POLLICIS LONGUS[a]This flexor inserts on the base of distal phalanx one.
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Insertion: EXTENSOR DIGITORUM[a] This muscle inserts on the extensor expansion (connective tissue) into middle and distal phalanges of the four medial digits.
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Insertion: LUMBRICALS[a]This intrinsic hand muscles insert on the middle and distal phalanges of digits II through V via the extensor expansion.
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Origin: LUMBRICALS[a]This intrinsic hand muscles originate on the tendon of flexor digitorum digitorum profundus.
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Insertion: EXTENSOR POLLICIS LONGUS[a]This extensor inserts on the base of distal phalanx 1, making the posterior border of the anatomical snuff box.
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Origin: EXTENSOR POLLICIS LONGUS[a]This thumb extensor originates on the posterior ulna and interosseus membrane.
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Insertion: EXTENSOR POLLICIS BREVIS[a]This extensor inserts on the base of proximal phalanx 1, contributing to anterior border of the anatomical snuff box.
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Origin: EXTENSOR POLLICIS BREVIS[a]This thumb extensor originates on the distal radius and interosseus membrane.
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Insertion: ABDUCTOR POLLICIS[a]This abductor inserts on the base of the first metacarpal, contributing to anterior border of the anatomical snuff box.
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Origin: ABDUCTOR POLLICIS[a]This abductor originates on the posterior ulna and radius and the interosseus membrane.
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Muscles of the forearm and hand – attachments reversed
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Which abductor originates on the posterior ulna and radius and the interosseus membrane?[a] ABDUCTOR POLLICIS
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Which abductor inserts on the base of the first metacarpal, contributing to anterior border of the anatomical snuff box?[a] ABDUCTOR POLLICIS
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Which thumb extensor originates on the distal radius and interosseus membrane?[a] EXTENSOR POLLICIS BREVIS
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Which extensor inserts on the base of proximal phalanx 1, contributing to anterior border of the anatomical snuff box?[a] EXTENSOR POLLICIS BREVIS
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Which thumb extensor originates on the posterior ulna and interosseus membrane?[a] EXTENSOR POLLICIS LONGUS
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Which extensor inserts on the base of distal phalanx 1, making the posterior border of the anatomical snuff box?[a] EXTENSOR POLLICIS LONGUS
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Which intrinsic hand muscles originate on the tendon of flexor digitorum digitorum profundus?[a]LUMBRICALS
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Which intrinsic hand muscles insert on the middle and distal phalanges of digits II through V via the extensor expansion?[a] LUMBRICALS
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Which muscle inserts on the extensor expansion (connective tissue) into middle and distal phalanges of the four medial digits?[a] EXTENSOR DIGITORUM
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This flexor inserts on the base of distal phalanx one?[a] FLEXOR POLLICIS LONGUS
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Which thumb muscle originates on the Anterior radius?[a] FLEXOR POLLICIS LONGUS
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Which muscle inserts on the distal phalanges, palmar surface?[a] FLEXOR DIGITORUM PROFUNDUS
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Which finger flexor originates on the anterior, proximal ulna?[a]FLEXOR DIGITORUM PROFUNDUS
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Which muscle inserts onto both sides of the proximal and middle phalanges of the four medial digits, creating a bridge for the deeper finger muscles?[a] FLEXOR DIGITORUM SUPERFICIALIS
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Which finger flexor originates on the medial epicondyle/humerus, anterior radius and ulna?[a] FLEXOR DIGITORUM SUPERFICIALIS
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Which muscle inserts on the posterior aspect, base of metacarpal V?[a] EXTENSOR CARPI ULNARIS
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Which muscle inserts on the posterior aspect, base of metacarpal III?[a] EXTENSOR CARPI RADIALIS BREVIS
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Which muscles originate on the lateral epicondyle by way of common extensor tendon?[a] EXTENSOR CARPI RADIALIS BREVIS, EXTENSOR CARPI ULNARIS, EXTENSOR DIGITORUM
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Which muscle inserts on the base of metatarsal II?[a] EXTENSOR CARPI RADIALIS LONGUS
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Which muscle originates on the lateral supracondylar ridge?[a] EXTENSOR CARPI RADIALIS LONGUS
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Which muscle inserts on the pisiform, hamate, anterior aspect, base of metacarpal V?[a] FLEXOR CARPI ULNARIS
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Which muscle inserts on many bones via palmar aponeurosis?[a] PALMARIS LONGUS
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Which muscle inserts on the anterior aspects, base of metacarpal II, (sometimes III)?[a] FLEXOR CARPI RADIALIS
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Which muscles originate on the medial epicondyle by way of common flexor tendon?[a] FLEXOR CARPI RADIALIS, PALMARIS LONGUS, FLEXOR CARPI ULNARIS
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Muscles of the forearm and hand – actions
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Action: FLEXOR DIGITORUM PROFUNDUS[a]This muscle does flexion of wrist, MCPJ, PIP, and DIP joints.
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Action: SUPINATOR[a]This muscle does supination only.
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Action: PRONATOR TERES[a]This muscle does pronation, elbow flexion.
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Action: PRONATOR QUADRATUS[a]This muscle does pronation only.
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Action: FLEXOR CARPI RADIALIS[a]This muscle does flexion, radial deviation.
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Action: PALMARIS LONGUS[a]This muscle does flexion or wrist, tenses the palmar aponeurosis.
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Action: FLEXOR CARPI ULNARIS[a]This muscle does flexion, ulnar deviation.
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Action: EXTENSOR CARPI RADIALIS LONGUS[a]This muscle does extension, radial deviation.
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Action: EXTENSOR CARPI RADIALIS BREVIS[a]This muscle does extension, radial deviation.
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Action: EXTENSOR CARPI ULNARIS[a]This muscle does extension, ulnar deviation.
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Action: FLEXOR DIGITORUM SUPERFICIALIS[a]This muscle does flexion of wrist, MCPJ, and PIPs (not the DIPs).
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Action: FLEXOR DIGITORUM PROFUNDUS[a]This muscle does flexion of wrist, MCPJ, PIP, and DIP joints.
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Action: FLEXOR POLLICIS LONGUS[a]This muscle does flexion of thumb.
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Action: EXTENSOR DIGITORUM[a]This muscle does Extension MCPJ, PIP, DIP and wrist.
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Action: EXTENSOR DIGITI MINIMI (QUINTI)[a]This muscle does extension of middle and distal phalanges of the fifth digit.
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Action: EXTENSOR INDICIS[a]This muscle does middle and distal phalanges of second digit.
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Action: EXTENSOR POLLICIS LONGUS[a]This muscle does extension of thumb.
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Action: ABDUCTOR POLLICIS BREVIS[a]This intrinsic muscle abducts the thumb.
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Action: FLEXOR POLLICIS BREVIS[a]This intrinsic muscle flexes the thumb.
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Action: ABDUCTOR DIGITI MINIMI[a]This intrinsic muscle abducts digit V.
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Action: FLEXOR DIGITI MINIMI[a]This intrinsic muscle flexes digit V.
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Action: OPPONENS DIGITI MINIMI[a]This intrinsic muscle moves the fifth digit toward the thumb.
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Action: PALMAR INTEROSSEI[a]This intrinsic muscle adducts digits I-IV.
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Action: DORSAL INTEROSSEI[a]This intrinsic muscle abducts digits I-IV.
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Action: lumbricals[a]This intrinsic muscle cause extension of the DIP’S and PIP’S while the MCPJ’s are flexing.
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Action: Adductor pollicis[a]This intrinsic muscle moves the thumb toward the index finger.
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List the elbow flexors.[a] biceps brachii, bracialis, pronator teres, brachioradialis
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List the elbow extensors.[a]triceps and anconius
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List the supinators.[a]biceps brachii, supinator, and brachioradialis
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List the pronators.[a]pronator teres, pronator quadratus and brachioradialis (to neutral)
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List the wrist flexors.[a] FLEXOR CARPI RADIALIS, PALMARIS LONGUS, flexor carpi ulnaris, flexor digitorum profundus and flexor digitorum superficialis
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List the wrist extensors.[a] EXTENSOR CARPI RADIALIS LONGUS, EXTENSOR CARPI RADIALIS BREVIS, EXTENSOR CARPI ULNARIS, extensor digitorum, extensor indicis proprius, and extensor digiti minimi (quinti) .
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List the wrist adductors.[a]flexor carpi ulnaris and extensor carpi ulnaris
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List the wrist abductors.[a]Tflexor carpi radialis and extensor carpi radialis longus
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Muscles of the forearm and hand – actions reversed
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Which action do flexor carpi radialis and extensor carpi radialis longus have in common?[a] wrist abductors.
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Which action do flexor carpi ulnaris and extensor carpi ulnaris have in common?[a] wrist adductors.
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Which action do EXTENSOR CARPI RADIALIS LONGUS, EXTENSOR CARPI RADIALIS BREVIS, EXTENSOR CARPI ULNARIS, extensor digitorum, extensor indicis proprius, and extensor digiti minimi (quinti) have in common?[a]wrist extensors.
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Which action do FLEXOR CARPI RADIALIS, PALMARIS LONGUS, flexor carpi ulnaris, flexor digitorum profundus and flexor digitorum have in common?[a]wrist flexors.
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Which action do pronator teres, pronator quadratus and brachioradialis have in common?[a] pronators.
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Which action do biceps brachii, supinator, and brachioradialis have in common?[a] supinators.
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Which action do triceps and anconius have in common?[a]elbow extensors.
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Which action do biceps brachii, bracialis, pronator teres brachioradialis have in common?[a] elbow flexors.
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Which intrinsic muscle moves the thumb toward the index finger?[a] Adductor pollicis
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Which intrinsic muscle cause extension of the DIP’S and PIP’S while the MCPJ’s are flexing?[a] lumbricals
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Which intrinsic muscle abducts digits I-IV?[a] DORSAL INTEROSSEI
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Which intrinsic muscle adducts digits I-IV?[a] PALMAR INTEROSSEI
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Which intrinsic muscle moves the fifth digit toward the thumb?[a] OPPONENS DIGITI MINIMI
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Which intrinsic muscle flexes digit V?[a] FLEXOR DIGITI MINIMI
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Which intrinsic muscle abducts digit V?[a] ABDUCTOR DIGITI MINIMI
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Which intrinsic muscle flexes the thumb?[a] FLEXOR POLLICIS BREVIS
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Which intrinsic muscle abducts the thumb?[a] ABDUCTOR POLLICIS BREVIS
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Which muscle does extension of thumb?[a] EXTENSOR POLLICIS LONGUS
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Which muscle does middle and distal phalanges of second digit?[a] EXTENSOR INDICIS
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Which muscle does extension of middle and distal phalanges of the fifth digit?[a] EXTENSOR DIGITI MINIMI (QUINTI)
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Which muscle does Extension MCPJ, PIP, DIP and wrist?[a] EXTENSOR DIGITORUM
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Which muscle does flexion of thumb?[a] FLEXOR POLLICIS LONGUS
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Which muscle does flexion of wrist, MCPJ, PIP, and DIP joints?[a] FLEXOR DIGITORUM PROFUNDUS
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Which muscle does flexion of wrist, MCPJ, and PIPs (not the DIPs)?[a] FLEXOR DIGITORUM SUPERFICIALIS
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Which muscle does extension, ulnar deviation?[a] EXTENSOR CARPI ULNARIS
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Which muscles do extension, radial deviation?[a] EXTENSOR CARPI RADIALIS BREVIS and LONGUS
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Which muscle does flexion, ulnar deviation?[a] FLEXOR CARPI ULNARIS
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Which muscle does flexion or wrist, tenses the palmar aponeurosis?[a] PALMARIS LONGUS
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Which muscle does flexion, radial deviation?[a] FLEXOR CARPI RADIALIS
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Which muscle does pronation only?[a] PRONATOR QUADRATUS
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Which muscle does pronation, elbow flexion?[a] PRONATOR TERES
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Which muscle does supination only?[a] SUPINATOR
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