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11 Cards in this Set
- Front
- Back
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Abductor Pollicis Brevis |
Origin: Flexor retinaculum and lalteral pillars of carpal tunnel (scaphoid and trapezium)
Insertion: Lateral side, base of proximal phalanx and extensor hood of thumb
NS: Motor recurrent branch of Median nerve (C8, T1)
Action: Thumb abduction |
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Flexor Pollicis Brevis |
Origin: Flexor retinaculum and tubercle of trapezium bone
Insertion: Lateral side, base proximal phalanx; sesamoid bone at head of 1st metacarpal
NS: Motor recurrent branch of median nerve (C8, T1)
Action: Thumb flexion |
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Opponens Pollicis |
Origin: Flexor retianculum and tubercle of trapezium bone
Insertion: Whole length 1st metacarpal bone (palmar surface and lateral margin)
NS: Motor recurrent branch of Median nerve (C8, T1)
Action: Thumb opposition (Rotates 1st MC medially and draws thumb toward center of palm) |
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Adductor Pollicis |
Origin: Oblique head- Bases of MC 2 and 3; Capitate and Trapezoid bones Transverse head- Anterior surface shaft of MC 3
Insertion: Medial side, base of proximal phalanx and extensor hood of thumb; sesamoid bone at head of 1st MC
NS: Deep branch of ulnar nerve (C8, T1)
Action: Thumb adduction |
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Abductor Digiti Minimi |
Origin: Pisiform bone; tendon of FCU and pisohamate ligament
Insertion: Medial side, base of proximal phalanx of little finger; DDE
NS: Deep branch of Ulnar nerve (C8, T1)
Action: Abduction of little finger |
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Flexor Digiti Minimi Brevis |
Origin: Flexor retinaculum and hook of hamate bone
Insertion: Medial side, base of proximal phalanx of little finger
NS: Deep branch of Ulnar nerve (C8, T1)
Action: Flexion of little finger at MP joint |
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Opponens Digiti Minimi |
Origin: Flexor retinaculum and hook of Hamate bone
Insertion: Medial margin and palmar surface of shaft of MC 5
NS: Deep branch of Ulnar nerve (C8, T1)
Action: Draws 5th finger forward and rotates it laterally for opposition |
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Palmaris Brevis |
Origin: Flexor retinaculum and palmar aponeurosis (medial margin)
Insertion: Skin on medial side palm; Blends with fascia over hypothenar eminence (both attachments are soft)
NS: Superficial branch of Ulnar nerve (C8, T1)
Action: tenses skin over hypothenar eminence and deepens the hollow of the hand |
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Lumbricals |
Origin: Tendons of FDP: #1 and 2 are unipennate muscles; lateral side of FDP tendons to index and middle fingers #3 and 4 are bipennate muscles. Adjacent sides of FDP tendons to middle and ring, and ring and little fingers
Insertion: Lateral side of the DDE to fingers 2,3,4,5 #1- into DDE lateral side of index finger #2- into DDE lateral side of middle finger #3- into DDE lateral side of ring finger #4- into DDE lateral side of little finger
NS: #1 and 2- median nerve (C8, T1) #3 and 4- deep branch of Ulnar nerve (C8, T1)
Action: MP flexion, IP extension |
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Dorsal Interossei Muscles (Bipennate) |
Origin: Adjacent sides of 2 MC bones: #1 adjacent sides of MC 1,2 #2 adjacent sides of MC 2,3 #3 adjacent sides of MC 3,4 #4 adjacent sides of MC 4,5
Insertion: Base proximal phalanx of fingers 2-4 and DDE #1 lateral side of index finger #2 lateral side middle finger #3 medial side of middle finger #4 medial side of ring finger
NS: Deep branch of Ulnar nerve (C8, T1)
Action: Abduction of fingers 2,3,4 at MP joints; MP flexion, IP extension via DDE of digits 2-4 |
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Palmar Interossei Muscles (Unipennate) |
Origin: Palmar surface (shaft) of MC 1,2,4,5 medial side MC 1, 2 lateral side MC 4,5
Insertion: Base proximal phalanx, fingers 1,2,4,5 and DDE Fingers 1,2 medial side Fingers 4,5 lateral side
NS: Deep branch of Ulnar nerve (C8, T1)
Action: Adduction of fingers 1,2,4,5 at MP joints; MP flexion, IP extension via DDE of digits 1,2,4,5 |
