Random Flashcards
What nerve runs between extensor carpi radialis longus and extensor carpi radialis brevis?
superficial branch of radial nerve
True or False. ECRL and ECRB have different innervations
True
ECRL –> radial nerve
ECRB –> deep branch of radial nerve
What is the last muscle innervated by deep branch of radial nerve distally?
supinator
What does the deep branch of radial nerve become past the supinator?
posterior interosseous nerve
What three tendons make up the snuff box?
extensor pollicis brevis/ abductor pollicis longus (both of these are traveling together - lateral)
extensor pollicis longus (medial)
What artery can be found inside the snuff box?
radial artery
What nerve can be seen traversing the snuff box?
superficial branch of radial nerve
Which two digits have their own extensors?
digits 2 and 5 (rocker hand)
Which two muscles of posterior forearm is innervated by radial nerve?
brachioradialis
extensor carpi radialis longus (ECRL)
What four muscles of posterior forearm is innervated by posterior IO nerve?
ABLE Abductor pollicis longus extensor pollicis Longus extensor pollicis Brevis Extensor indicis
What is located in the triangular interval (2)?
radial nerve
profunda brachii
What bone can be seen within the snuff box?
scaphoid
Which digit lacks middle phalanx?
thumb
Which has more range of motion, ABduction or ADduction of wrist?
ADduction
What artery does thoracodorsal artery anastomose with?
dorsal scapular a
What artery does circumflex scapular artery anastomose with?
suprascapular a
Branches of lateral cord from brachial plexus?
lateral pectoral n
Branches of posterior cord from brachial plexus?
upper subscapular n
lower subscapular n
thoracodorsal n
Branches of medial cord from brachial plexus?
medial pectoral n
medial brachial cutaneous n
medial antebrachial cutaneous n
Branches of upper trunk from brachial plexus?
suprascapular n
n to subclavius
What innervates serratus anterior?
long thoracic n (C5,6,7)
What innervates latissimus dorsi?
thoracodorsal n (C6-C8)
What innervates teres major?
lower subscapular n (C5,6)
What innervates teres minor?
axillary n (C5,6)
What innervates supraspinatus and infraspinatus?
suprascapular n (C5,6)
What root levels are in posterior cord?
C5-C8
What root levels are in medial cord?
C8, T1
What root levels are in lateral cord?
C5-7
What are all the muscles that are innervated by just C5,6?
All shoulder muscles: supraspinatus infraspinatus subscapularis teres minor deltoid teres major subclavius
What are the muscles of rotator cuff?
supraspinatus
infraspinatus
teres minor
subscapularis
What artery anastomose with radial colalteral a?
radial recurrent a
What artery anastomose with middle collateral a?
recurrent IO a
What artery anastomose with superior ulnar collateral a?
posterior ulnar recurrent a
What artery anastomose with inferior ulnar collateral a?
anterior ulnar recurrent a
What two muscles lateral rotate scapula?
infraspinatus
teres minor
What root levels are in musculocutaneous n?
C5 - C7
What root levels are in median n?
C6 - T1
What root levels are in ulnar n?
C8 and T1
What root levels are in radial n?
C5 - C8
What root levels are in axillary n?
C5 and C6
What is found within the triangular space?
circumflex scapular a
What is found within quadrangular space?
axillary n
posterior circumflex humeral a
What is found within the triangular interval?
radial n
profunda brachii
What are the borders to triangular space?
long head of triceps
teres minor
teres major
What are the borders to quadrangular space?
surgical neck of humerus
long head of triceps
teres minor
teres major
What are the borders to triangular interval?
lateral head of triceps
long head of triceps
teres major
Name the carpals (Some Lovers Try Positions That They Can’t Handle)
Scaphoid Lunate Triquetrium Pisiform Trapezium Trapezoid Capitate Hamate
What kind of joint is radio-carpal joint?
condyloid synovial
What are the three bones that make up the radio-carpal joint?
radius
scaphoid
lunate
What kind of joint is trapeziometacarpal joint?
saddle
What two bones make up the trapeziometacarpal joint?
thumb and trapezium
What kind of joints are metacarpophalangeal (MCP) joints?
condyloid
What kind of joints are interphalangeal joints?
hinge
Which phalanx does the thumb not have that all the other digits do?
thumb does not have middle phalanx
What innervates the thenar compartment?
recurrent branch of the median nerve
What innervates the hypthenar compartment?
deep branch of the ulnar nerve
What are the functions of lumbricals?
flex MCP joint
extend IP joints
What muscles in the hand is innervated by median nerve?
those in thenar compartment
lateral 2 lumbricals
How many DAB and PAD are there?
4 DAB
3 PAD
What branch of median n provides motor to the hand?
recurrent br
What branch of median n provides sensory to the hand?
palmar br
Would sensory to the hand be involved if patient has carpal tunnel?
No, bc palmar br of median n usually branch before the nerve enters the tunnel
If the recurrent br of median n is damaged, will there be manifestations to the lumbricals?
No
Where does the cephalic vein drain into?
subclavian vein
Where does the basilic vein drain into?
axillary vein
What nerve is between the two heads of pronator teres (humeral and ulnar)?
median nerve
