Intrinsic Hand Flashcards
What muscle is found under the palmar aponeurosis?
Palmaris brevis
What is the action of the flexor retinaculum?
Prevents bowing of the tendons of the digital flexors
What are the contents of the carpal tunnel?
Tendons of flexor digitorum superficialis, flexor digitorum profundus and flexor pollicis longus, median nerve
The ulnar canal is formed by the __________ carpal ____________ stretching from the tendon of flexor carpi _______ to the flexor ____________
Palmar; ligament; ulnaris; retinaculum
What are the muscles of the superficial thenar eminence?
Abductor pollicis brevis, flexor pollicis brevis and opponens pollicis
What are the actions of the muscles of the superficial thenar eminence?
Abduction and flexion of thumb, opposition
What innervates the muscles of the superficial thenar eminence?
Recurrent branch of median nerve
What are the muscles of the deep thenar eminence?
Adductor pollicis (transverse and oblique head)
What innervates the adductor pollicis?
Deep ulnar nerve
What are the muscles of the hypothenar eminence?
Abductor digiti minimi, flexor digiti minimi brevis and opponens digiti minimi
What innervates the hypothenar eminence?
Deep ulnar nerve
What are the functions of the lumbricals?
Flexion of MCP and extension of IP joints
What innervates the lumbricals?
Median and deep ulnar nerves
What are the muscles of the interosseous compartment?
Palmar interossei and dorsal interossei
What innervates the palmar interossei and dorsal interossei?
Deep ulnar nerve