2478072
Description
Flashcards by Melissa Denker, updated more than 1 year ago
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Created by Melissa Denker
over 9 years ago
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| Question | Answer |
| Anterior compartment layers (3) Function? | Superficial layer Intermediate layer Deep layer Function: pronation, flexion |
| Anterior compartment: Superficial layer muscles (4) | Flexor carpi ulnaris m. Palmaris longus m. Flexor carpi radialis m. Pronator teres m. |
| Flexor carpi ulnaris m. Origin? Innervation? Function? (2) | Origin: medial epicondyle ---> pisiform bone Innervation: ulnar nerve Function: flexion of wrist, adduction of wrist |
| Palmaris longus m. Origin? Innervation? Function? (2) | Origin: medial epicondyle --> palmar aponeurosis Innervation: median nerve Function: flexion of wrist; prevents shearing forces when gripping with hand |
| Flexor carpi radialis m. Origin? Innervation? Function? (2) | Origin: medial epicondyle --> base of metacarpals 2, 3 Innervation: median nerve Function: flexion of wrist, adduction of wrist |
| Pronator teres m. Origin? Innervation? Function? (1) | Origin: medial epicondyle --> lateral mid-shaft radius Innervation: median nerve Function: pronation |
| Anterior compartment: Intermediate layer (1) | Flexor digitorum superficialis m. |
| Flexor digitorum superficialis m. Origin? Innervation? Function? (3) | Origin: medial epicondyle --> four tendons: palmar surface of middle phalanges of fingers Innervation: median nerve Function: flexion of proximal interphalangeal joints, flexion of metacarpophalangeal joints, flexion of wrist |
| Anterior compartment: Deep layer muscles (3) | Flexor digitorum profundus m. Flexor pollicis longus m. Pronator quadratus m. |
| Flexor digitorum profundus m. Origin? Innervation? (2) Function? (3) | Origin: medial surface of ulna/medial half of IO membrane --> four tendons: palmar surface of distal phalanges of fingers Innervation: LATERAL HALF - median nerve; MEDIAL HALF - ulnar nerve Function: flexion of distal interphalangeal joints, flexion of metacarpophalangeal joints, flexion of wrist |
| Flexor pollicis longus m. Origin? Innervation? (+specific n.) Function? (2) | Origin: anterior surface of radius/radial half of IO membrane --> palmar surface of base of distal thumb phalanx Innervation: median nerve (anterior interosseous nerve) Function: fixes interphalangeal thumb joint, flexion of metacarpophalangeal thumb joint |
| Pronator quadratus m. Origin? Innervation? (+specific n.) Function? (1) | Origin: distal anterior surface of ulna --> distal anterior surface of radius Innervation: median nerve (anterior interosseous nerve) Function: pronation of forearm |
| Posterior compartment Layers? Function? (2) | Superficial layer Deep layer Function: Extension, supination |
| Posterior compartment Superficial layer (7) | Brachioradialis m. Extensor carpi radialis longus m. Extensor carpi radialis brevis m. Extensor digitorum m. Extensor digit minimi m. Extensor carpi ulnaris m. Anconeus m. |
| Posterior superficial layer Brachioradialis m. Origin? Innervation? Function? | Origin: proximal part of lateral supraepicondylar ridge (humerus) --> lateral surface of distal radius Innervation: radial nerve (before splitting) Function: accessory flexion of elbow joint WHEN in mid-pronation |
| Posterior superficial layer Extensor carpi radialis longus m. Origin? Innervation? Function? (2) | Origin: distal part of supraepicondylar ridge (humerus) --> dorsal surface of base of metacarpal 2 Innervation: radial nerve (before splitting) Function: Extension of wrist, abduction of wrist |
| Posterior superficial layer Extensor carpi radialis brevis m. Origin? Innervation? Function? (2) | Origin: lateral epicondyle --> dorsal surface of base of metacarpals 2, 3 Innervation: deep branch of radial nerve (before entering supinator m.) Function: Extension of wrist, abduction of wrist |
| Posterior supercifial layer Extensor digitorum m. Origin? Innervation? Function? (2) | Origin: lateral epicondyle --> four tendons: extensor hoods on dorsal aspects of middle/distal finger phalanges Innervation: posterior interosseous nerve Function: Extension of fingers, extension of wrist |
| Posterior superficial layer Extensor digiti minimi m. Origin? Innervation? Function? (1) | Origin: lateral epicondyle --> dorsal extensor hood of little finger Innervation: posterior interosseous nerve Function: extension of little finger |
| Posterior superficial layer Extensor carpi ulnaris m. Origin? Innervation? Function? (2) | Origin: lateral epicondyle --> tubercle on medial side of base of metacarpal 5 Innervation: posterior interosseous nerve Function: extension of wrist, adduction of wrist |
| Posterior superficial layer Anconeus m. Origin? Innervation? Function? (2) | Origin: lateral epicondyle --> olecranon Innervation: radial nerve Function: abduction of ulna WHEN pronated; accessory extension of elbow |
| Posterior compartment Deep layer (5) | Supinator m. Abductor pollicis longus m. Abductor pollicis brevis m. Extensor pollicis longus m. Extensor indicis m. |
| Posterior deep layer Supinator m. Origin? (2) Innervation? Function? (1) | Origin: SUPERFICIAL PART - lateral epicondyle, radial collateral ligament, radial annular ligament --> lateral surface of radius DEEP PART - supinator crest (ulna) --> lateral surface of radius Innervation: posterior interosseous nerve Function: supination |
| Posterior deep layer Abductor pollicis longus m. Origin? Innervation? Function? (2) | Origin: posterior surface of ulna and radius (distal to supinator/anconeus) --> lateral side of base of metacarpal 1 Innervation: posterior interosseous nerve Function: abduction of carpometacarpal thumb joint, accessory extensor of thumb |
| Posterior deep layer Extensor pollicis brevis m. Origin? Innervation? Function? (2) | Origin: posterior surface of radius (distal to abductor pollicis longus) --> dorsal surface of base of proximal thumb phalanx Innervation: posterior interosseous nerve Function: extension of metacarpophalangeal thumb joint, extension of carpometacarpal thumb joint |
| Posterior deep layer Extensor pollicis longus m. Origin? Innervation? Function? (3) | Origin: posterior surface of ulna (distal to abductor pollicis longus) --> dorsal surface of base of distal thumb phalanx Innervation: posterior interosseous nerve Function: extension of interphalangeal thumb joint, extension of metacarpophalangeal thumb joint, extension of carpometacarpal thumb joint |
| Posterior deep layer Extensor indicis m. Origin? Innervation? Function? (1) | Origin: posterior surface of ulna (distal to extensor pollicis longus) --> extensor hood of index finger Innervation: posterior interosseous nerve Function: extension of index finger |
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