The Hand and Wrist Flashcards
Describe the Action, Origin, Insertion, and Innervation of the Extensor pollicis brevis ?
Action: Extends thumb
Origin: Posterior distal surface of radius
Insertion: proximal phalanx
Innervation: Posterior antebrachial interosseous nerve
Describe the Action, Origin, Insertion, and Innervation of the adductor pollicis longus ?
Action: Adducts thumb
Origin: Capitate bone, 2nd/3rd metacarpal
Insertion: proximal phalanx
Innervation: Deep branch of ulnar nerve
Describe the Action, Origin, Insertion, and Innervation of the Extensor pollicis longus?
Action: extends thumb
Origin: posterior middle surface of the ulna
Insertion: distal phalanx of the thumb
Innervation: Posterior antebrachial interosseous nerve
Describe the Action, Origin, Insertion, and Innervation of the Extensor indicis ?
Action: Extends index finger
Origin: Posterior surface of ulna
Insertion: Extensor expansion of index finger
Innervation: Posterior antebrachial interosseous nerve
Describe the Action, Origin, Insertion, and Innervation of the extensor carpi ulnaris ?
Action: Extends and adducts hand/wrist
Origin: Lateral epicondyle of humerus
Insertion: medial aspect of the fifth metacarpal
Innervation: Posterior antebrachial interosseous nerve
Describe the Action, Origin, Insertion, and Innervation of the Extensor digiti minimi ?
Action: Extends little finger
Origin: Lateral epicondyle of humerus
Insertion: Extensor expansion of little finger
Innervation: Posterior antebrachial interosseous nerve
Describe the Action, Origin, Insertion, and Innervation of the Extensor digitorum ?
Action: Extends fingers
Origin: Lateral epicondyle of humerus
Insertion: distal phalanges of fingers
Innervation: Posterior antebrachial interosseous nerve
Describe the Action, Origin, Insertion, and Innervation of the Extensor carpi radialis brevis?
Action: Extends hand/wrist
Origin: lateral supracondylar ridge of the humerus
Insertion: Base of 3rd metacarpal
Innervation: Deep branch of radial nerve
Describe the Action, Origin, Insertion, and Innervation of the Extensor carpi radialis longus ?
Action: Extends hand/wrist
Origin: lateral supracondylar ridge of the humerus
Insertion: Base of second metacarpal
Innervation: Radial nerve
Describe the Action, Origin, Insertion, and Innervation of the Flexor Carpi Radialis ?
Action: Flexes wrist/hand
Origin: Medial epicondyle of humerus
Insertion: palmar aspects of 2nd/3rd metacarpal
Innervation: Median nerve
Describe the Action, Origin, Insertion, and Innervation of the Flexor Carpi Ulnaris ?
Action: Flexes and adducts hand/wrist
Origin: Medial epicondyle of humerus
Insertion: Pisiform, Metacarpal 5
Innervation: Ulnar nerve
Describe the Action, Origin, Insertion, and Innervation of the Palmaris longus?
Action: Flexes hand/wrist, stabilises palmar aponeurosis
Origin: Medial epicondyle of humerus
Insertion: Palmar fascia
Innervation: Median nerve
Describe the Action, Origin, Insertion, and Innervation of the flexor digitorum superficialis ?
Action: Flexes fingers
Origin: Medial epicondyle of the humerus
Insertion: middle phalanges
Innervation: Median nerve
Describe the Action, Origin, Insertion, and Innervation of the Flexor digitorum profundus ?
Action: Flexes finger
Origin: Medial aspect of coronoid process of Ulna
Insertion: bases of distal phalanges
Innervation: Ulnar nerve, median nerve
Describe the Action, Origin, Insertion, and Innervation of the Flexor Pollicis longus?
Action: Thumb flexor
Origin: Anterior surface of radius
Insertion: base of distal phalanx
Innervation: anterior antebrachial interosseous nerve
What muscle is in the intermediate layer (flexor) of the hand/wrist ?
Flexor digitorum superficialis
What muscle is in the deep layer (flexors) of the hand/wrist ? (2)
Flexor pollicis longus
Flexor digitorum profundus
What muscles are in the superficial layer (flexors) of the hand/wrist? (3)
Flexor carpi radialis / ulnaris
Palmaris longus
What are the superficial layer muscles (extensor) in the hand/wrist? (5)
Extensor Carpi Radialis Longus / Brevis
Extensor digitorum
Extensor Digiti Minimi
Extensor Carpi Ulnaris
What are the deep layer muscles (extensor/adductor) in the hand/wrist? (4)
Extensor indicis
Extensor Pollicis brevis/longus
Adductor Pollicis longus
What are the 2 eminences of the hand?
Thenar
Hypothenar
What are the movements at the eminences?
Flexion
Abduction
Opposition
Muscles in the Thenar eminence and their function?
Opponens pollicis - thumb opposition
Flexor pollicis brevis - thumb flexion
Abductor pollicis brevis - thumb abductor
Muscles in the hypothenar eminence and their function?
Opponens digiti mini - opposition
Flexor digiti minimi - flexion of pinky
Abductor digiti minimi - abductor of pinky
What muscles are involved in abd/adduction and flexion of the fingers?
Abduction - Dorsal interosseous
Adduction - Palmar interosseous
Flexion - Lumbricals
Bones of the wrist/hand?(5)
Carpals
Metacarpals
Proximal/Distal/Intermediate phalanges
Carpal bones? (8)
Scaphoid
Lunate
Triquetrum
Pisiform
Trapezium
Trapezoid
Capitate
Hamate
Movements at the wrist ?(6)
Flexion
Extension
Radial/Ulnar deviation
Pronation
Supination
Thumb movements ?
Flexion
Extension
Adduction
Abduction
Opposition
Finger movements ?(7)
Flexion
(hyper)Extension
Abduction
Adduction
Circumduction
Opposition
Joints of the wrist/hand?(five)
Radiocarpal
Carpometacarpal
Metacarpophalangeal
Proximal / Distal interphalangeal
