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13 Cards in this Set
- Front
- Back
Thenar Eminence |
Under the thumb 3 intrinsic muscles: Abductor pollicis brevis m Flexor pollicis brevis m Opponens pollicis m. |
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Abductor pollicis brevis m. |
Origin: Flexor retinaculum, scaphoid, trapezium Insertion: Lateral side base proximal phalanx digit 1 Innervation: Median n. (C8 primary, T1) Action: Abduct the thumb |
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Flexor pollicis brevis m. |
Origin: Flexor retinaculum, scaphoid, trapezium Insertion: Lateral side base of proximal phalanx digit 1 Innervation: Median n. (C8 primary, T1) Action: Flexes the thumb |
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Opponens pollicis m. |
Origin: Flexor retinaculum, scaphoid, trapezium Insertion: Lateral side metacarpal first digit Innervation: Median n. (C8 primary, T1) Action: Opposes the thumb |
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Adductor pollicis m. |
Origin: 2 heads Oblique H: Base metacarpal 2 and 3 Transverse H: Body metacarpals 2 and 3 Insertion: Medial side base proximal phalanx digit 1 Innervation: Ulnar n. (C8, T1 primary) Action: Adducts the thumb |
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Hypothenar Eminence |
Under the 5th digit 3 intrinsic muscles: Abductor digiti minimi Flexor digiti minimi Opponens digiti minimi |
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Abductor digiti minimi. m. |
Origin: Pisiform Insertion: Medial side base proximal phalanx digit 5 Innervation: Ulnar n. (C8, T1 primary) Action: Pinky abduction |
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Flexor digiti minimi m. |
Origin: Hook of hamate, flexor retinaculum Insertion: Medial side base proximal phalanx digit 5 Innervation: Ulnar n. (C8, T1 primary) Action: MCP flexion digit 5 (pinky) |
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Opponens digiti minimi m. |
Origin: Hook of hamate, flexor retinaculum Insertion: Medial side base 5th metacarpal Innervation: Ulnar n. (C8, T1 primary) Action: Opposes digit 5 |
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Lumbrical mm. 1 + 2 |
Origin: Lateral sides tendons 1 and 2 of Flexor digitorum profunds m. Insertion: Lateral side extension expansion digits 2 and 3 Innervation: Median n. (C8, T1 primary) Action: MCP flexion, PIP and DIP extension |
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Lumbrical mm. 3 + 4 |
Origin: Medial side tendons 2 and 3 and lateral side tendons 3 and 4 of FDP m. Insertion: Lateral side extensor expansion digits 4 and 5 Innervation: Ulnar n. (C8, T1 primary) Action: MCP flexion, PIP and DIP extension |
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Dorsal interosseous mm. (4) |
Origin: Adjacent metacarpals Insertion: Extensor expansion, base proximal phalanx Innervation: Ulnar n. (C8, T1 primary) Action: Abduction digits 2, 3, 4, assists lumbricals |
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Palmar interosseous mm. (3) |
Origin: Palmar surface metacarpals Insertion: Extensor expansion, base proximal phalanx Innervation: Ulnar n. (C8, T1 primary) Action: Adduct digits 2, 4, 5, assist lumbricals |
