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Muscles
Muscles of The Forearm and Hand
| Term | Definition |
|---|---|
| Flexor Insertion | Flexor Retinaculum |
| Anterior Muscles are... | Flexors inserted via flexor retinaculum. |
| Posterior Muscles are... | Extensors inserted via extensor retinaculum. |
| Anterior Muscles consist of... | Five superficial and three deep muscles. |
| Flexor tendon attached to... | Medial Epicondyle of humerus. |
| The Flexor Retinaculum is inserted at... | The wrist. |
| Pronator Teres | Pronates forearm, weak flexor of elbow. |
| Flexor Carpi Radialis | Powerful flexor and abductor of hand, weak synergist of elbow flexion. |
| Palmaris Longus | Tenses skin and fascia of palm during hand movements. |
| Flexor Carpi Ulnaris | Powerful flexor and adductor of hand. |
| Flexor Digitorum Superficialis | Flexes wrist and middle phalanges of second to fifth fingers. |
| The Five Superficial Anterior Muscles of The Forearm are.. | Pronator Teres Flexor Carpi Radialis Palmaris Longus Flexor Carpi Ulnaris Flexor Digitorum Superficialis |
| Flexor Pollicis Longus | Flexes distal phalanx of thumb. |
| Flexor Digitorum Profundus | Flexes distal interphalangeal joints. |
| Pronator Quadratus | Prime mover of forearm pronation, acts with pronator teres and helps keep ulna and radius together. |
| The Three Deep Anterior Muscles of The Forearm are... | Flexor Pollicis Longus Flexor Digitorum Profundus Pronator Quadratus |
| Posterior Muscles consist of... | Four superficial and four deep muscles. |
| Extensor Retinaculum is inserted at... | The wrist. |
| Brachioradialis | Synergist in flexing forearm. |
| Extensor Carpi Radialis Longus | Extends hand in conjunction with extensor carpi ulnaris; abducts hand in conjunction with flexor carpi radialis. |
| Extensor Carpi Radialis Brevis | Extends and abducts hand; acts synergistically with extensor carpi radialis longus to steady wrist during finger flexion. |
| Extensor Digitorum | Prime mover of finger extension; extends hand; can abduct (flare) fingers. |
| Extensor Carpi Ulnaris | Extends hand in conjunction with extensor carpi radialis and adducts hand in conjunction with flexor carpi ulnaris. |
| The Four Superficial Posterior Muscles are... | Extensor Carpi Radialis Longus Extensor Carpi Radialis Brevis Extensor Digitorum Extensor Carpi Ulnaris |
| Supinator | Assists biceps brachii to forcible supinate forearm; works alone in slow supination; antagonist of pronator muscles. |
| Abductor Pollicis Longus | Abducts and Extends Thumb. |
| Extensor Pollicis Brevis and Longus | Extends Thumb. |
| Extensor Indicis | Extends index finger and assists in extending wrist. |
| The Four Deep Posterior Muscles are... | Supinator Abductor Pollicis Longus Extensor Pollicis Brevis and Longus Extensor Indicis |