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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 |