Muscles of Hand Flashcards
FLEXOR RETINACULUM
Roof of Carpal Tunnel
DEEP TO IT:
- Flexor Digiforum Superficialis
- Flexor Digitorum Profundus
- Flexor Pollicis Longus
- Median Nerve
THROUGH IT:
- Flexor Carpi Radialis
LUMBRICALS (Origin)
Tendons Flexor Digitorum Profundus
LUMBRICALS (Insertion)
Lateral sides extensor hoods
LUMBRICALS (Action)
Flexion metacarpophalangeal joints
Extends dorsal interphalangeal joints
LUMBRICALS (Innervation)
LATERAL 2 lumbricals = Median Nerve
MEDIAL 2 lumbricals = Ulnar Nerve
ABDUCTOR POLLICIS BREVIS [THENAR] (Origin)
Tubercle of Trapezium and Scaphoid
Adjacent flexor retinaculum
ABDUCTOR POLLICIS BREVIS [THENAR] (Insertion)
Proximal phalanx and extensor hood of thumb
ABDUCTOR POLLICIS BREVIS [THENAR] (Action)
Abducts thumb at metacarpophalangeal joint
ABDUCTOR POLLICIS BREVIS [THENAR] (Innervation)
Recurrent branch of Median Nerve
FLEXOR POLLICIS BREVIS [THENAR] (Origin)
Tubercle of Trapezium and flexor retinaculum
FLEXOR POLLICIS BREVIS [THENAR] (Insertion)
Proximal phalanx of thumb
FLEXOR POLLICIS BREVIS [THENAR] (Action)
Flexes thumb at metacarpophalangeal joint
FLEXOR POLLICAS BREVIS [THENAR] (Innervation)
Recurrent branch of Median Nerve
OPPONENS POLLICIS [THENAR] (Origin)
Tubercle of Trapezium and flexor retinaculum
OPPONENS POLLICIS [THENAR] (Insertion)
Lateral margin, Palmar surface 1st metacarpal
OPPONENS POLLICIS [THENAR] (Action)
Medially Rotates thumb
OPPONENS POLLICIS [THENAR] (Innervation)
Recurrent branch of Median Nerve
ADDUCTOR POLLICIS (Origin)
OBLIQUE HEAD
- Capitate and bases 2nd and 3rd metacarpals
TRANSVERSE HEAD
- Anterior surface shaft of 3rd metacarpal
ADDUCTOR POLLICIS (Insertion)
Base proximal phalanx thumb
Extensor hood of thumb
ADDUCTOR POLLICIS (Action)
Adducts thumb
ADDUCTOR POLLICIS (Innervation)
Deep branch of Ulnar Nerve
ABDUCTOR DIGITI MINIMI [HYPOTHENAR] (Origin)
Pisiform and pisohamate ligament
Tendon Flexor Carpi Ulnaris
ABDUCTOR DIGITI MINIMI [HYPOTHENAR] (Insertion)
Proximal phalanx little finger
ABDUCTOR DIGITI MINIM [HYPOTHENAR] (Action)
Abducts little finger at metacarpophalangeal joint
ABDUCTOR DIGITI MINIMI [HYPOTHENAR] (Innervation)
Deep branch of Ulnar Nerve
FLEXOR DIGITI MINIMI [HYPOTHENAR] (Origin)
Hook of Hamate and flexor retinaculum
FLEXOR DIGITI MINIMI [HYPOTHENAR] (Insertion)
Proximal phalanx little finger
FLEXOR DIGITI MINIMI [HYPOTHENAR] (Action)
Flexes little finger at metacarpophalangeal joint
FLEXOR DIGITI MINIMI [HYPOTHENAR] (Innervation)
Deep branch of Ulnar Nerve
OPPONENS DIGITS MINIMI [HYPOTHENAR] (Origin)
Hook of Hamate and flexor retinaculum
OPPONENS DIGITI MINIMI [HYPOTHENAR] (Insertion)
Medial aspect 5th metacarpal
OPPONENS DIGITI MINIMI [HYPOTHENAR] (Action)
Laterally Rotates 5th metacarpal
OPPONENS DIGITI MINIMI [HYPOTHENAR] (Innervation)
Deep branch of UInar Nerve
PALMAR INTEROSSEUS (Origin)
Sides of metacarpals
PALMAR INTEROSSEUS (Insertion)
Extensor hoods index, ring and little finger
Proximal phalanx index, ring and little finger
PALMAR INTEROSSEUS (Action)
Adduction of index, ring and little finger
Extension at dorsal interphalangeal joint
PALMAR INTEROSSEUS (Innervation)
Deep branch of Ulnar Nerve
EXTENSOR RETINACULUM
COMPARTMENT 1:
- Abductor Pollicis Longus
- Extensor Pollicis Brevis
COMPARTMENT 2:
- Extensor Carpi Radialis Longus
- Extensor Carpi Radialis Brevis
COMPARTMENT 3:
- Extensor Pollicis Longus
COMPARTMENT 4:
- Extensor Digitorum
- Extensor Indicis
COMPARTMENT 5:
- Extensor Digiti Minimi
COMPARTMENT 6:
- Extensor Carpi Ulnaris
DORSAL INTEROSSEUS (Origin)
Adjacent metacarpal
DORSAL INTEROSSEOUS (Insertion)
Extensor hoods index, ring and middle finger
Proximal phalanx index, ring and middle finger
DORSAL INTEROSSEUS (Action)
Abduction of index, ring and middle finger
Extension at dorsal interphalangeal joint
DORSAL INTEROSSEUS (Innervation)
Deep branch of Ulnar Nerve
EXTENSOR HOOD
Tendons of Extensor Digitorum and Extensor Pollicis Longus
Interossei, Lumbricals and Abductor Digiti Minimi on sides
Adductor Pollicis and Abductor Pollicis Brevis insert (thumb)