Forearm Flashcards
Flexor Digitorum Superficialis
Origin
Humeroulnar head: medial epicondyle of humerus and coronoid process of ulna
Radial Head: Proximal Radius
Flexor Digitorum Superficialis
Insertion
Middle phalanges digits 2-5
Flexor Digitorum Superficialis
Innervation
Median N. (C5-T1)
Flexor Digitorum Superficialis
Action
Wrist: Flexion
Digits: Flexion 2-5 digits
Flexor Carpi Ulnaris
Origin
Humeral head: medial epicondyle of humerus
Ulnar Head: olecranon process of ulna
Flexor Carpi Ulnaris
Insertion
Pisiform, hamate, 5th metacarpal
Flexor Carpi Ulnaris
Innervation
Ulnar N. (C7-T1)
Flexor Carpi Ulnaris
Action
Wrist: flexion, ulnar deviation
Flexor Digitorum Profundus
Origin
Proximal 3/4 of anterior ulna, interosseous membrane
Flexor Digitorum Profundus
Insertion
Distal phalanges digits 2-5
Flexor Digitorum Profundus
Innervation
Median N. (C5-T1), Ulnar N. (C7-T1)
Flexor Digitorum Profundus
Action
Wrist: Flexion
Digits: Flexion 2-5 digits
Flexor Pollicis Longus
Origin
Anterior Radius, interosseous membrane
Flexor Pollicis Longus
Insertion
Distal phalanx 1st digit
Flexor Pollicis Longus
Innervation
Median N. (C5-T1)
Flexor Pollicis Longus
Action
Digits: Flexion of 1st digit
Pronator Quadratus
Origin
Distal 1/4 anterior ulna
Pronator Quadratus
Insertion
Distal 1/4 anterior radius
Pronator Quadratus
Innervation
Median N. (C5-T1)
Pronator Quadratus
Action
Forearm: Pronation
Brachioradialis
Origin
Lateral supracondylar ridge of humerus
Brachioradialis
Insertion
Styloid process of radius
Brachioradialis
Innervation
Radial N. (C5-T1)
Brachioradialis
Action
Forearm: Flexion, supination to neutral, pronation to neutral
Extensor Carpi Radialis Longus
Origin
Lateral supracondylar ridge of humerus
Extensor Carpi Radialis Longus
Insertion
Base of 2nd metacarpal
Extensor Carpi Radialis Longus
Innervation
Radial N. (C5-T1)
Extensor Carpi Radialis Longus
Action
Wrist: Extension, radial deviation
Extensor Carpi Radialis Brevis
Origin
Lateral epicondyle of humerus
Extensor Carpi Radialis Brevis
Insertion
Base of 3rd metacarpal
Extensor Carpi Radialis Brevis
Innervation
Radial N. (C5-T1)
Extensor Carpi Radialis Brevis
Action
Wrist: extension, radial deviation
Extensor Digitorum
Origin
Lateral epicondyle of humerus
Extensor Digitorum
Insertion
Middle and distal phalanges digits 2-5
Extensor Digitorum
Innervation
Posterior interosseous branch of Radial N. (C7-C8)
Extensor Digitorum
Action
Wrist: Extension
Digits: Extension of 2-5 digits
Extensor Digit Minimi
Origin
Lateral epicondyle of humerus
Extensor Digiti Minimi
Insertion
Dorsal digital expansion of 5th digit
Extensor Digit Minimi
Innervation
Posterior interosseous branch of Radial N. (C7-C8)
Extensor Digiti Minimi
Action
Wrist: extension
Digits: Extend 5th digit
Extensor Carpi Ulnaris
Origin
Lateral epicondyle of humerus
Extensor Carpi Ulnaris
Insertion
Base of the 5th metacarpal
Extensor Carpi Ulnaris
Innervation
Posterior interosseous branch of Radial N. (C7-C8)
Extensor Carpi Ulnaris
Action
Wrist: Extension, Ulnar Deviation
Extensor Pollicis Longus
Origin
Middle 1/3 Posterior ulna, interosseous membrane
Extensor Pollicis Longus
Insertion
Distal phalanx 1st digit
Extensor Pollicis Longus
Innervation
Posterior interosseous branch of radial n. (C7-C8)
Extensor Pollicis Longus
Action
Wrist: weak extension
Digits: extension of 1st digit
Extensor Pollicis Brevis
Origin
Distal 1/3 posterior radius, interosseous membrane
Extensor Pollicis Brevis
Insertion
Proximal Phalanx 1st digit
Extensor Pollicis Brevis
Innervation
Posterior Interosseous branch of Radial N. (C7-C8)
Extensor Pollicis Brevis
Action
Digits: Extension of 1st digit
Abductor Pollicis Longus
Origin
Proximal posterior radius and ulna, interosseous membrane
Abductor Pollicis Longus
Insertion
Base of 1st metacarpal
Abductor Pollicis Longus
Innervation
Posterior interosseous branch of Radial N. (C7-C8)
Abductor Pollicis Longus
Action
Digits: abduction of 1st digit
Extensor Indicis
Origin
Distal posterior ulna, interosseous membrane
Extensor Indicis
Insertion
Extensor expansion of 2nd digit
Extensor Indicis
Innervation
Posterior Interosseous Branch of radial N. (C7-C8)
Extensor Indicis
Action
Wrist: weak extension
Digits: extension of 2nd digit
Supinator
Origin
Lateral epicondyle of humerus, supinator crest of ulna, radial collateral L.
Supinator
Insertion
Proximal 1/3 lateral surface of radius
Supinator
Innervation
Posterior interosseous branch of radial n. (C7-C8)
Supinator
Action
Forearm: supination