The Arm & Flexor Forearm II Flashcards
antebrachial fascia:
deep fascia of the ___
continuous above w/ the ___ fascia
forearm
brachial fascia
interosseous membrane:
thin, but strong membrane uniting the ___ & ___
fibers run obliquely downward & medially so that a force applied to the lower end of the ___ (falling on an outstretched hand) is transmitted to the ___, then ___, then ___
attachment site for many ___
radius
ulna
ulna
humerus
scapula
muscles
flexor retinaculum:
thickening of deep fascia that holds the ___ tendons in position at the ___
converts the concave anterior surface of the ___ into an ___ (___) for passage of the ___ nerve & the ___ tendons
long flexor tendons
wrist
hand
osteofibrous (carpal) tunnel
median nerve
long flexor tendons
flexor retinaculum:
attached medially to the ___ bone & ___
attached laterally to the ___ & ___ bones
the proximal border corresponds to the ___ skin crease in front of the ___
pisoform bone
hook of the hamate
scaphoid & trapezium bones
distal transverse skin crease
wrist
flexor retinaculum:
Carpal tunnel syndrome will involve the ___ nerve but not the ___ nerve
The ___ nerve and artery are outside of the flexor retinaculum
Median nerve
Ulnar nerve
Ulnar
extensor retinaculum:
thickening of deep fascia across the back of the ___
holds the ___ tendons in position
attached medially to the ___ bone & ___
attached laterally to the distal end of the ___
wrist
long extensor tendons
pisiform bone
hook of the hamate
radius
anterior (flexor) compartment of the forearm:
arteries (2)
nerve supply:
- all of the muscles are innervated by the ___ nerve
- except the ___ & medial 1/2 of the ___
- these are supplied by the ___ nerve
radial & ulnar arteries
median nerve
flexor carpi ulnaris
flexor digitorum profundus
ulnar nerve
superficial muscles of the anterior compartment (4)
pronator teres
flexor carpi radialis
palmaris longus
flexor carpi ulnaris
superficial muscles of the anterior compartment:
pronator teres:
nerve(s)
action(s)
median nerve
pronation & flexion of the forearm
superficial muscles of the anterior compartment:
flexor carpi radialis:
nerve(s)
action(s)
median nerve
flexes & abducts the wrist joint
superficial muscles of the anterior compartment:
palmaris longus:
nerve(s)
action(s)
median nerve
flexes the wrist
superficial muscles of the anterior compartment:
flexor carpi ulnaris:
nerve(s)
action(s)
ulnar nerve
flexes & adducts the wrist
intermediate muscles of the anterior compartment (1)
flexor digitorum superficialis
intermediate muscles of the anterior compartment:
flexor digitorum superficialis:
nerve(s)
action(s)
median nerve
flexes fingers, knuckles, & wrist
deep muscles of the anterior compartment (3)
flexor pollicus longus
flexor digitorum profundus
pronator quadratus
deep muscles of the anterior compartment:
flexor pollicus longus:
nerve(s)
action(s)
anterior interosseous branch of median nerve
flexes thumb
deep muscles of the anterior compartment:
flexor digitorum profundus:
nerve(s)
action(s)
this is the only muscle which (flexes/extends) the distal ___ of the (medial/lateral) (#) ___
ulnar & median nerves (anterior interosseous branch)
flexes fingers, knuckles, & wrist
flexes
distal phalanges of hte medial four fingers
deep muscles of the anterior compartment:
pronator quadratus:
nerve(s)
action(s)
anterior interosseous branch of median nerve
pronates the forearm
arteries of the flexor compartment of the forearm (2)
ulnar artery
radial artery
arteries of the flexor compartment of the forearm:
ulnar artery:
large terminal branch of the ___ artery
descends deep to the ___ muscle
runs through the ___ with the ___ nerve
brachial artery
pronator teres muscle
forearm
ulnar nerve
arteries of the flexor compartment of the forearm:
ulnar artery:
emerges at the ___ w/ the ___ nerve lateral to the ___ bone & (superficial/deep) to the ___
wrist ulnar nerve pisiform bone superficial flexor retinaculum
arteries of the flexor compartment of the forearm:
ulnar artery:
important branches in the forearm (3)
anterior ulnar recurrent artery
posteiror ulnar recurrent artery
common interosseous artery
arteries of the flexor compartment of the forearm:
ulnar artery:
branches of the common interosseous artery (2)
second artery gives off the ___ artery
anterior interosseous artery
posterior interosseous artery
interosseous recurrent artery
arteries of the flexor compartment of the forearm:
radial artery:
runs along the (medial/lateral) forearm partially under the cover of the ___ muscle
approaches the ___ b/n the ___ & the ___ muscle
lateral
brachioradialis
wrist
radius
flexor carpi radialis muscle
arteries of the flexor compartment of the forearm:
important branches of the radial artery (2)
second artery unites w/ the terminal part of the ___ artery completing the ___
radial recurrent branch
superficial palmar branch
ulnar artery
superficial palmar arch
nerves of the flexor compartment (2)
median nerve
ulnar nerve
nerves of the flexor compartment:
median nerve:
appears in the ___ fossa medial to the ___ artery
passes b/n the two heads of the ___ muscle
courses in the plane b/n the ___ & the ___ whethere it gives off the ___ nerve
cubital fossa
brachial artery
pronator teres muscle
flexor digitorum superficialis
flexor digitorum profundus
anterior interosseous nerve
nerves of the flexor compartment:
median nerve:
at the wrist, it emerges from the lateral border of the ___ muscle & lies behind the tendon of the ___
enters the palm of the hand (superficial/deep) to the flexor retinaculum
flexor digitorum superficialis muscle
tendon of the palmaris longus
deep
nerves of the flexor compartment:
ulnar nerve:
enters the front of the forearm passing b/n the two heads of the ___
runs down the forearm b/n the ___ & the ___ muscles
enters the palm of the hand (superficial/deep) to the flexor retinaculum & lateral to the ___ bone
flexor carpi ulnaris
flexor carpi ulnaris
flexor digitorum profundus
superficial
pisiform bone
