Term
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Definition
Responsible for thumb opposition
Abductor Pollicis Brevis, Flexor Pollicis Brvis, Opponens Pollicis, and Adductor Pollicis |
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Term
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Definition
Associated with little finger
Abductor Digiti Minimi, Flexor Digiti Minimi Brevis, and Opponens Digiti Minimi |
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Term
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Definition
Middle of Hand
Lumbricals (1-4), Palmar Interossei (1-4), and Dorsal Interossei (1-4) |
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Term
| Abductor Pollicis Brevis (Origin, Insertion, Nerve Supply, and Action) |
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Definition
| Thenar Muscle; O: Flexor retinaculum and adjacent carpals (scaphoid and trapezium) I: Radial side of first phalanx of thumb N: Median Nerve A: Abducts thumb |
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Term
| Flexor Pollicis Brevis (Origin, Insertion, Nerve Supply, and Action) |
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Definition
| Thenar Muscle; O: Flexor Retinaculum and trapezium I: Base of radial side of proximal phalanx of thumb N: Median Nerve A: Flexes thumb |
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Term
| Opponens Pollicis (Origin, Insertion, Nerve Supply, and Action) |
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Definition
Thenar Muscle;
O: Flexor retinaculum and trapezium
I: Radial side of first metacarpal
N: Median Nerve
A: Opposition/grasping- moves thumb across palm to touch little finger |
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Term
| Adductor Pollicis (Origin, Insertion, Nerve Supply, and Action) |
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Definition
Thenar Muscle;
O: (2 Heads) 1)Capitate and bases of 2nd and 3rd metacarpals (oblique), 2) Third metacarpal (transverse)
I: Ulnar side of proximal phalanx of thumb
N: ULNAR NERVE (dif from other thenar)
A: Adducts thumb (move closer to palm) |
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Term
| Abductor Digiti Minimi (Origin, Insertion, Nerve Supply, and Action) |
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Definition
Hypothenar Muscle;
O: Pisiform carpal and tendon of flexor carpi ulnaris
I: Ulnar side of base of proximal phalanx (5th digit)
N: Ulnar Nerve
A: Abducts little finger and flexes proximal phalanx |
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Term
| Flexor Digiti Minimi Brevis (Origin, Insertion, Nerve Supply, and Action) |
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Definition
Hypothenar Muscle;
O: Hook of hamate and flexor retinaculum
I: Ulnar side of base of proximal phalanx (5th digit)
N: Ulnar Nerve
A: Flexes little finger |
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Term
| Opponens Digiti Minimi (Origin, Insertion, Nerve Supply, and Action) |
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Definition
Hypothenar Muscle;
O: Hook of hamate and flexor retinaculum
I: Ulnar side of fifth metacarpal
N: Ulnar nerve
A: Opposes little finger |
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Term
| Lumbricals (Origin, Insertion, Nerve Supply, and Action) |
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Definition
| Midpalmar Muscles O: Radial side of each tendon of flexor digitorum profundues (1-4) I: Into radial side of extensor expansion hood (dorsal) of fingers 2-5 N: Median Nerve (2 fingers closest to thumb) and Ulnar Nerve (3,4) A: Flex metacarpophalangeal joints and extend at interphalangeal joints (keep fingers straight) |
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Term
| Palmar Interossei (Origin, Insertion, Nerve Supply, and Action) |
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Definition
Midpalmar Muscles; Bring fingers closer to axis
O: Four unipennate fasciculi
1)Ulnar side of 1st metacarpal
2)Ulnar side of 2nd metacarpal
3)Radial side of 4th metacarpal
4)Radial side of 5th metacarpal
I:Proximal phalanx on the same side of their origin
1)Ulnar side of prox phalanx of thumb
2)Ulnar side of prox phalanx of index
3)Radial side of prox phalanx of ring
4)Radial side of prox phalnx of pinky
(& Extensor Expansion Hood)
N: Ulnar Nerve
A: Adduct fingers toward axis; flex proximal phalanges and extend distal phalanges (because of E.E. Hood) |
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Term
| Dorsal Interossei (Origin, Insertion, Nerve Supply, and Action) |
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Definition
Midpalmar Muscles; Move fingers away from axis
O: Four bipennate fasciculi:
1)adj sides of 1st and 2nd metacarpals
2)adj sides of 2nd and 3rd metacarpals
3)adj sides of 3rd and 4th metacarpals
4)adj sides of 4th and 5th metacarpals
I: Into proximal phalanges and extension expansion hood
1) Radial side of index finger
2) Radial side of middle finger
3)Ulnar side of middle finger
4)Ulnar side of ring finger
N: Ulnar Nerve
A: Abduct fingers away from axis; flex proximal phalanges and extend 2 distal phalanges (because of EE Hood) |
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Term
| Fundamental Movements of the thumb: Flexion |
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Definition
| Flexor Pollicis Longus and Flexor Pollicis Brevis |
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Term
| Fundamental Movements of the thumb: Extension |
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Definition
| Extensor Pollicis Longus and Extensor Pollicis Brevis |
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Term
| Fundamental Movements of the thumb: Opposition |
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Definition
| Opponens Pollicis and Adductor Pollicis |
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Term
Fundamental Movements of the thumb:
Adduction |
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Definition
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Term
| Fundamental Movements of the thumb: Abduction |
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Definition
| Abductor Pollicis Longus and Abductor Pollicis Brevis |
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Term
| Fundamental Movements of the little finger: Flexion |
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Definition
| Flexor Digitorum Superficialis and Flexor Digitorum Profundus |
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Term
| Fundamental Movements of the little finger: Extension |
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Definition
| Extensor Digitorum and Extensor Digiti Minimi |
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Term
| Fundamental Movements of the little finger: Opposition |
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Definition
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Term
| Fundamental Movements of the little finger: Adduction |
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Definition
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Term
| Fundamental Movements of the little finger: Abduction |
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Definition
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Term
| Fundamental Movements of the fingers: Flexion |
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Definition
| Flexor Digitorum Superficialis, Flexor Digitorum Profundus, Lumbricals (metacarpal-phalangeal), and Interossei (interphalangeal) |
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Term
Fundamental Movements of the fingers:
Extension |
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Definition
| Extensor Digitorum, Extensor Digiti Minimi, Lumbricals (interphalangeal), and Interossei (interphalangeal) |
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Term
Fundamental Movements of the fingers:
Adduction |
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Definition
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Term
Fundamental Movements of the fingers:
Abduction |
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Definition
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