2537746
Description
Flashcards by Melissa Denker, updated more than 1 year ago
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Created by Melissa Denker
about 9 years ago
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| Question | Answer |
| Intrinsic hand muscles (11) Functions (3) | Palmaris brevis m. Dorsal interosseous mm. Palmar interosseous mm. Lumbrical mm. Adductor pollicis m. Opponens pollicis m. Flexor pollicis brevis m. Abductor pollicis brevis m. Flexor digiti minimi brevis m. Adductor digiti minimi m. Opponens digiti minimi m. Functions: flexion, abduction, adduction |
| Palmaris brevis m. Origin? Innervation? (nerve + branch) Function? (1) | Origin: palmar aponeurosis, flexor retinaculum --> dermis of skin on medial aspect of hand Innervation: ulnar nerve (superficial branch) Function: improves grip |
| Dorsal interosseous mm. (3) Origin? Innervation? (nerve + branch) Function? (1) | Origin: adjacent sides of metacarpals --> extensor hoods and bases of proximal phalanges of index/middle/ring fingers Innervation: ulnar nerve (deep branch) Function: abduction of fingers at metacarpophalangeal joints |
| Palmar interosseous mm. Origin? Innervation? (nerve + branch) Function? (1) | Origin: sides of metacarpals --> extensor hoods of thumb/index/ring/little fingers, proximal phalanx of thumb Innervation: ulnar nerve (deep branch) Function: adduction of fingers at metacarpophalangeal joints |
| Adductor pollicis m. Origin? (2) Innervation? Function? (1) | Origin: TRANSVERSE HEAD: metacarpal 3 --> extensor hood and proximal phalanx of thumb OBLIQUE HEAD: capitate, bases of metacarpals 2 and 3 --> extensor hood and proximal phalanx of thumb Innervation: ulnar nerve (deep branch) Function: Adduction of thumb |
| Lumbrical mm. (4) Origin? Innervation? (2) Function? (1) | Origin: tendons of flexor digitorum profundus m. --> extensor hoods of index/middle/ring/little fingers Innervation: MEDIAL 2 MUSCLES: ulnar nerve (deep branch) LATERAL 2 MUSCLES: median nerve (digital branch) Function: flexion of metacarpophalangeal joints PLUS extension of interphalangel joints |
| Thenar muscles (3) | Opponens pollicis m. Abductor pollicis brevis m. Flexor pollicis brevis m. |
| Opponens pollicis m. Origin? Innervation? Function? | Origin: trapezium, flexor retinaculum --> metacarpal 1 Innervation: median nerve (recurrent branch) Function: medial rotation of thumb |
| Abductor pollicis brevis m. Origin? Innervation? Function? (1) | Origin: scaphoid, trapezium, flexor retinaculum --> proximal phalanx and extensor hood of thumb Innervation: median nerve (reccurent branch) Function: abduction of thumb |
| Flexor pollicis brevis m. Origin? Innervation? Function? (1) | Origin: trapezium, flexor retinaculum --> proximal phalanx of thumb Innervation: median nerve (recurrent branch) Function: flexion of thumb at metacarpophalangeal joint |
| Hypothenar muscles (3) | Opponens digiti minimi m. Adductor digiti minimi m. Flexor digiti minimi brevis m. |
| Opponens digiti minimi m. Origin? Innervation? Function? (1) | Origin: hamulus, flexor retinaculum --> medial aspect of metacarpal 5 Innervation: ulnar nerve (deep branch) Function: lateral rotation of metacarpal 5 |
| Abductor digiti minimi m. Origin? Innervation? Function? (1) | Origin: pisiform, pisohamate ligament, flexor carpi ulnaris tendon --> proximal phalanx of little finger Innervation: ulnar nerve (deep branch) Function: abduction of little finger |
| Flexor digiti minimi brevis m. Origin? Innervation? Function? (1) | Origin: hamulus, flexor retinaculum --> proximal phalanx of little finger Innervation: ulnar nerve (deep branch) Function: flexion of little finger |
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