Flashcards in Exam 5 Upper Extremity 52X Deck (86)
Which muscles are responsible for supination?
What are the superficial veins of the forearm?
The radial pulse is palpated where the radial artery lies between the tendons of what two muscles?
Flexor carpi radialis
Abductor pollicis longus
The wrist and hand consist of how many bones and muscles?
19 intrinsic muscles
20 extrinsic muscles
What is formed by the antebrachial fascia thickening posteriorly over the distal ends of the radius and ulna?
The extensor retinaculum function and prevents what?
Retains extensor tendons in position
The flexor retinaculum extends from where to where?
Across Wrist: Scaphoid and trapezium bones on radial side to hamate and pisiform bone on ulnar side
The Flexor retinaculum forms what structure?
What lies outside the Flexor retinaculum (Carpal tunnel) but under the palmar carpal ligament?
Tendon of Palmaris longus muscle
What encompasses the tendons within the flexor retinaculum?
What transmit through the flexor retinaculum?
-Flexor pollicis longus
-Flexor digitorum superficialis
-Flexor digitorum profundus
What other significant items lies within the carpal tunnel?
What results from any lesion that significantly reduces the size of the carpal tunnel?
Carpal tunnel syndrome
Carpal tunnel syndrome affects what portion of the hand for cutaneous sensation and which part for motor function?
Cutaneous (Sensory): Lateral 3 and one-half digits (thumb to lateral aspect of middle finger)
Motor: Thenar muscle coordination. unable to oppose the thumb
What is Tinel sign often referred to?
Distal tingling on percussion
What the name of the extension of the tendon of the palmaris longus muscle, that is most superficial structure of the hand and which fibers attach to overlying skin at the palmer creases, goes deep to fascia, metacarpals, and phalanges?
What are the intrinsic muscles of the hand?
What are the muscles of the thenar compartment and together form the Thenar eminence?
Abductor pollicis brevis
Flexor pollicis brevis
What is the name of the muscle that is fan shaped, adducts the thumb, providing power to the grip?
Adductor pollicis muscle
What are the muscles of the Hypothenar compartment that together form the hypothenar eminence?
Abductor digiti minimi
Flexor digiti minimi brevis
Opponens digiti minimi
Which nerve innervates the muscles of the hypothenar compartment?
Which nerve innervate the muscles of the Thenar compartment?
Recurrent branch of median nerve (motor branch)
What is the name of the muscles that have a wormlike appearance and attach proximally to tnedons of the flexor digitorum porfundus and distally to parts of the extensor digitorum tendon called extensor expansions?
Which Lumbrical muscles are innervated by the median nerve and which by the ulnar nerve?
Median: Lateral two lumbrical muscles
Ulnar: Medial two lumbrical muscles
What function do the lumbrical muscles serve?
Flex the digits at the metacarpophalangeal Joint (MCP joint) and extend the interphalangeal joints