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SGU: Upper Limb 2

Upper Extremity Forearm and Hand

QuestionAnswer
List the muscles in the superficial layer (from lateral to medial) of the forearm flexor compartment pronator teres , flexor carpi radialis , Palmaris longus , flexor carpi ulnaris
Flexor carpi ulnaris function flexes and aDducts the wrist joint
Flexor carpi ulnaris innervations ulnar nerve
Flexor carpi ulnaris blood supply ulnar
Flexor carpi radialis function flexes and aBducts wrist
Flexor carpi radialis innervations median nerve
Flexor carpi radialis blood supply ulnar artery
Palmaris longus action flexes wrist joint & resists shearing force when gripping
Palmaris longus innervations median nerve
Palmaris longus blood supply ulnar artery
Pronator teres function pronation
Pronator teres innervations median nerve
Pronator teres blood supply ulnar artery
What muscle is in the intermediate flexor compartment? flexor digitorum superficialis
Flexor digitorum superficialis function flexes proximal interphalangeal joints of index, middle, ring and little fingers. Can also flex metacarpophalangeal joints of same fingers and wrist
What are the muscles of the deep flexor compartment? flexor digitorum profundus, flexor pollicis longus, and pronator quadrates
flexor digitorum profundus function flexes distal interphalangeal and metacarpophalangeal joints of the index, middle, ring and little fingers and wrist
flexor digitorum profundus innervations lateral-median anterior interosseus, medial –ulnar
flexor digitorum profundus blood supply Ulnar and anterior interosseous artery
flexor pollicis longus function flexes interphalangeal and metacarpophalangeal joint of thumb
flexor pollicis longus innervations median anterior interosseus nerve
flexor pollicis longus blood supply anterior interosseous artery
pronator quadrates function pronation
pronator quadrates innervations median anterior interosseus nerve
pronator quadrates blood supply anterior interosseous artery
Brachioradialis: Innervation Radial Nerve.  
Brachioradialis: Blood Supply Radial artery
Brachioradialis: Action accessory flexor of elbow joint when forearm is midpronated
Extensor Carpi Radialis Longus: Innervation Radial nerve.  
Extensor Carpi Radialis Longus: Blood Supply Radial artery
Extensor Carpi Radialis Longus: Action Extend and aBduct hand at the wrist joint.  
Extensor Carpi Radialis Brevis: Innervation Deep branch of the radial nerve.  
Extensor Carpi Radialis Brevis: Action Extend and aBduct the hand at the wrist joint 
Extensor Digitorum: Innervation Posterior Interosseous Nerve
Extensor Digitorum: Blood Supply Posterior Interosseous artery.  
Extensor Digitorum: Action Extends medial four digits and wrist
Extensor Digiti Minimi: Innervation Posterior Interosseous Nerve, a continuation of the deep branch of the radial nerve.
Extensor Digiti Minimi: Blood Supply Posterior Interosseous artery.  
Extensor Digiti Minimi: Action extends little finger
Extensor Carpi Ulnaris: Innervation Posterior Interosseous Nerve
Extensor Carpi Ulnaris: Blood Supply Posterior Interosseous artery.  
Extensor Carpi Ulnaris: Action Extends and adducts the hand at the wrist joint
Supinator: Innervation posterior interosseous nerve  
Supinator: Blood Supply Posterior Interosseous artery and Radial Recurrent artery.  
Supinator: Action Supinates forearm
Abductor Pollicis Longus: Innervation Posterior Interosseous Nerve
Abductor Pollicis Longus: Blood Supply Posterior Interosseous artery.  
Abductor Pollicis Longus: Action Abducts thumb and extends it at the carpometacarpal joint.  
Extensor Pollicis Longus: Innervation Posterior Interosseous Nerve, a continuation of the deep branch of the radial nerve.  "
Extensor Pollicis Longus: Blood Supply Posterior Interosseous artery.  
Extensor Pollicis Longus: Action Extends distal phalanx of the thumb at interphalangeal joint; extends metacarpophalangeal and carpometacarpal joints.  
Extensor Pollicis Brevis: Innervation "Posterior Interosseous Nerve, a continuation of the deep branch of the radial nerve.  "
Extensor Pollicis Brevis: Blood Supply Posterior Interosseous artery.  
Extensor Pollicis Brevis: Action Extends proximal phalanx of the thumb at the metacarpophalangeal joint; extends carpometacarpal joints.  
Extendor Indicis: Innervation Posterior Interosseous Nerve, a coninuation of the deep branch of the radial nerve.  "
Extensor Indicis: Blood Supply Posterior Interosseous artery.  
Extensor Indicis: Action Extends index finger
Palmaris brevis: Innervation superficial br. of the ulnar n
Palmaris brevis: Blood Supply ulnar a.  
Palmaris brevis: Action improves grip
Opponens Pollicis: Innervation Recurrent branch of the Median Nerve.  
Opponens Pollicis: Blood Supply Superficial palmar branch of the Radial artery.  
Opponens Pollicis: Action rotate thumb medially.  
Abductor Pollicis Brevis: Innervation Recurrent branch of the Median Nerve.  
Abductor Pollicis Brevis: Blood Supply Superficial palmar branch of the Radial artery.  
Abductor Pollicis Brevis: Action Abducts the thumb at metacarpophalangeal joint
Flexor Pollicis Brevis: Innervation Recurrent branch of the Median Nerve.  
Flexor Pollicis Brevis: Action Flexes the thumb at metacarpophalangeal joint.  
Flexor Pollicis Brevis: Blood Supply Superficial palmar branch of the Radial artery.
Adductor Pollicis: Innervation Deep branch of the Ulnar nerve.  
Adductor Pollicis: Action Adducts the thumb
Adductor Pollicis: Blood Supply Deep palmar arterial arch.
Abductor Digiti Minimi: Innervation Deep branch of the Ulnar nerve.  
Abductor Digiti Minimi: Blood Supply ulnar artery.  
Abductor Digiti Minimi: Action Abducts little finger at metacarpophalangeal joint
Flexor Digiti Minimi Brevis: Innervation Deep branch of the Ulnar nerve.  
Flexor Digiti Minimi Brevis: Action Flexes little finger at metacarpophalangeal joint  
Flexor Digiti Minimi Brevis: Blood Supply ulnar artery
Opponens Digiti Minimi: Innervation Deep branch of the Ulnar Nerve.  
Opponens Digiti Minimi: Blood Supply Ulnar artery.  
Opponens Digiti Minimi: Action laterally rotates metacarpal 5  
Lumbricals: Innervation of lateral 2 Median Nerve  
Lumbricals: Innervation of medial 2 Deep branch of Ulnar Nerve.  
Lumbricals: Action "Flex metacarpophalangeal joints while extend interphalangeal joints
Lumbricals: Blood Supply Branches of superficial palmar arterial arches.
Dorsal Interossei (1-4): Innervation Deep branch of the Ulnar Nerve.  
Dorsal Interossei (1-4): Action aBduction of index, middle, and ring fingers at the metacarpophalangeal joints
Dorsal Interossei (1-4): Blood Supply dorsal and palmar metacarpal aa
Palmar Interossei (1-3): Innervation Deep branch of the Ulnar Nerve.  
Palmar Interossei (1-3): Action aDduction of thumb, index, and ring and little fingers at the metacarpophalangeal joints
Palmar Interossei (1-3): Blood Supply palmar metacarpal aa.
Name the two joints between the ulna and radius proximal and distal radio-ulnar joint
Which of the forearms bones is thick at the top and thin at the bottom ulna
Flexor digitorum superficialis blood supply ulnar arteries
Flexor digitorum superficialis innervations median nerve
What is the membrane between ulna and radius? interosseous membrane
What are the bones in the proximal row of the carpals from lateral to medial? scaphoid, lunate, triquetrum, pisiform
What are the bones in the distal row of the carpals from lateral to medial? trapizium, trapezoid, capitate, hamate
What is the diagnosis of someone with a break in the fifth metacarpal bone? boxer's fracture
What ligaments reinforce the metacarpophalangeal joints? palmar ligament and collateral ligaments
What ligaments connects the palmar ligament? transverse metacarpal ligaments.
What is the flexor retinaculum? thick connective tissue ligament that bridges medial and lateral sides of the base of the arch
Which tendons pass through the carpal tunnel? flexor digitorum profundus, flexor digitorum superficialis, flexor pollicus longus
What nerve is affected by carpal tunnel syndrome? median nerve
What nerve, artery and tendon pass above the carpal tunnel? The ulnar nerve and artery and palmaris longus.
What artery is laterally adjacent to the scaphoid and enters the snuff box? radial
What tendons are on the posterior side of the wrist? extensor digitorum and extensor indicis
What tendons are on the medial side of the wrist? extensor carpi ulnaris and extensor digiti minimi
What tendons are on the lateral side of the wrist? abductor pollicis longus, extensor pollicis longus and brevis, extensor carpi radialis longus and brevis
What muscles make up the borders of the anatomical snuff box? Lateral:APL, EPB Medial:EPL Floor:scaphoid, trapezium and ECRL and ECRB
Why does an infection of the synovial sheats not spread when it enters digits 2-4? synovial sheats ends at metacarpals
Why does an infection of the synovial sheats spread when it enters digits 1 or 5? These sheaths are continuous with the sheaths of the tendons in the carpal tunnel.
What nerves and muscles goes through the thenar eminence? median nerve, opponins pollicus, abductor pollicis brevis, flexor pollicis brevis
What nerves and muscles goes through the hypothena eminence? ulnar nerve, opponens, flexor, abductor digiti minimi
What goes through the thenar space? adductor pollicus and Ulnar
What goes through the mid palmer space? FDS, FDP, median and ulnar nerves
What nerve is injured and what symptoms occur from a supracondylar fracture? Median nerve injured. Weak wrist flexion, ulnar deviation and flexion of 4 and 5 digit, atrophy of thenar eminence. OAF muscles lost. Benediction hand when making fist. Sensory loss on palmar and dorsal 2,3,4 1/2 and palmar thumb.
What nerve is injured and what symptoms occur from a Colle's fracture? LLOAF pollicis muscles gone: thenar emminence atrophy, loss of thumb fine movements and opposition
How can you find out if a patient has carpel tunnel syndrome? Phalen's Test or Tinel's test
Created by: mnoronha