Arm Flashcards
movements of anterior compartment forearm
flexion and pronation
movements of posterior compartment forearm
extension and supination
how many layers in the anterior compartment forearm
3
superficial
intermediate
deep
what is the most medial muscle in the anterior compartment of the forearm ?
flexor carpi ulnaris
what muscles are in the superficial layer of the anterior compartment of the forearm?
flexor carpi ulnaris
palmaris longus
flexor carpi radialis
pronator teres
what is the most lateral muscle in the anterior compartment of the forearm ?
pronator teres
what muscles are in the intermediate layer of the anterior compartment of the forearm?
flexor digitorum superficialis
what muscles are in the deep layer of the anterior compartment of the forearm?
flexor digitorum profundus
pronator quadratus
flexor pollicus longus
Origin, attachment, action and nerve supply of flexor carpi ulnaris
common flexor tendon (medial epicondyle)
and olecranon (2 heads)
5th metacarpal, hook hamate and pisiform
flexion of wrist and adduction
innervated by ulnar nerve
Origin, attachment, action and nerve supply of palmaris longus
medial epicondyle, common flexor tendon
palmar aponeurosis
flexion
median nerve
Origin, attachment, action and nerve supply of flexor carpi radialis
medial eicondyle, common flexor tendon
2nd metatarsal
flexion and abduction
median nerve
Origin, attachment, action and nerve supply of pronator teres
2 heads - medial epiondyle and coronoid process
mid shaft radius
flexion and pronation
median
Origin, attachment, action and nerve supply of flexor digitorum superficialis
2 heads
- common flexor origin and coronoid
- anterioroblique line on radius
middle phlanges
flex the PIPs
median nerve
Origin, attachment, action and nerve supply of flexor digitorum profundus
2 parts - medial and lateral
proximal 3/4 of ulnar and the interosseus membrane
medial - 4th and 5th distal phalanges
lateral - 2nd and 3rd distal phakanges
flex DIPs and wrist
medial - ulnar
lateral - AIN
Origin, attachment, action and nerve supply of pronator quadratus
distal 1/4 of radius and ulnar
primary pronator
AIN
Origin, attachment, action and nerve supply of flexor pollicus longus
anterior radius and interosseus membrane
base of thumb phalynx
flex the thumb
AIN
how many tunnels in the posterior compartment forearm?
6
contents of 1st tunnel in posterior forearm
most lateral - radial side
lateral border of anatomical snuffbox
abductor pollicis longus
extensor pollicis brevis
contents of 2nd tunnel in posterior forearm
extensor carpi radialis longus
extensor carpi radialis brevis
contents of 3rd tunnel in posterior forearm
extensor pollicis longus
contents of 4th tunnel in posterior forearm
extenosr digitorum
extensor indicus
contents of 5th tunnel in posterior forearm
extensor digiti minimi
contents of 6th tunnel in posterior forearm
extensor carpi ulnaris
Origin, attachment, action and nerve supply of abductor pollicus longus
upper 1/2 radius and ulnar ad interosseus membrane
base of 1st metacarpal
abducts and extends the thumb
PIN
Origin, attachment, action and nerve supply of extensor pollicus brevis
distal 1/3 radius and interosseus membrane
phalynx thumb
PIN
extend the phalynx of thumb
Origin, attachment, action and nerve supply of extensor carpi radialis longus
lateral supracondylar ridge on humerus
2nd metacarpal
radial nerve
extend and abduct
Origin, attachment, action and nerve supply of extensor carpi radialis brevis
common extensor origin - lateral epicondyle
3rd metacarpal
deep radial branch
extend and abduct
Origin, attachment, action and nerve supply of extensor pollicus longus
middle 1/3 ulnar and interosseus membrane
thumb phalynx
extend all joints of the thumb
PIN
Origin, attachment, action and nerve supply of extensor digitorum
lateral epicondyle
extesor expansions of digitis
extend metacarpophalyngeal and interphalyngeal joints
radial
Origin, attachment, action and nerve supply of extensor indicus
distal 1/3 ulnar and interousseus membrane
extensor expansion 2nd digit
extend index finger and a bit of wrist
PIN
Origin, attachment, action and nerve supply of extensor digiti minimi
lateral epicondyle
extensor expansion 5th digit
extend MCPJs and IPJs
Radial
Origin, attachment, action and nerve supply of extensor carpi ulnaris
lateral epicondyle and posterior ulnar
base of 5th metacarpal
extent and abduct
radial
where do you find interossei
beside and infront of metacarpals
insert into extensor expansions
what do introssei do?
abduct and adduct fingers
where do you find lumbricals
profundus tendons
insert itno extensor expansions
what do lumbricals do
extens interphalangeal and flex metacarpal phalangeal joints
which vein runs along the medial aspet of the forearm
basillic
where does the cephralic artery become deep?
deltopectoral fascia
whichfascia does the cephalic vein peiece
clavicopectral
what vein connects the basillic and cephalic veins
median cubital
where does the axillary artery commence
subclavian becomes axillary at lateral border of first rib
where does the axillary become the brachial artery
border of teres major
what divides th axiallry artery into 3 parts
pec minor
branches of axillary artery
part 1
- superior thoracic
part 2
- acromithoracic and lateral thoracic
part 3
subscap
anterior and posterior circumflex
wjere does the brachial artery become the radial/ulnar arteries
neck of radius or higher
which direction does the median nerve cross the brachial artery
lateral to medial at mid humerus
does the ulna artery run deep or superficial to the common flexor orgin
deep
which nerve lies medial to the axillary and brachial artery until mind humerus
ulnar
atmid humerus the median then crooses materal to medial
