The Arm & Flexor Forearm II Flashcards Preview

Anatomy > The Arm & Flexor Forearm II > Flashcards

Flashcards in The Arm & Flexor Forearm II Deck (29):
1

antebrachial fascia:

deep fascia of the ___

continuous above w/ the ___ fascia

forearm

brachial fascia

2

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

3

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

4

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

4

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

5

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

6

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

7

superficial muscles of the anterior compartment (4)

pronator teres
flexor carpi radialis
palmaris longus
flexor carpi ulnaris

8

superficial muscles of the anterior compartment:
pronator teres:

nerve(s)

action(s)

median nerve

pronation & flexion of the forearm

9

superficial muscles of the anterior compartment:
flexor carpi radialis:

nerve(s)

action(s)

median nerve

flexes & abducts the wrist joint

10

superficial muscles of the anterior compartment:
palmaris longus:

nerve(s)

action(s)

median nerve

flexes the wrist

11

superficial muscles of the anterior compartment:
flexor carpi ulnaris:

nerve(s)

action(s)

ulnar nerve

flexes & adducts the wrist

12

intermediate muscles of the anterior compartment (1)

flexor digitorum superficialis

13

intermediate muscles of the anterior compartment:
flexor digitorum superficialis:

nerve(s)

action(s)

median nerve

flexes fingers, knuckles, & wrist

14

deep muscles of the anterior compartment (3)

flexor pollicus longus
flexor digitorum profundus
pronator quadratus

15

deep muscles of the anterior compartment:
flexor pollicus longus:

nerve(s)

action(s)

anterior interosseous branch of median nerve

flexes thumb

16

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

17

deep muscles of the anterior compartment:
pronator quadratus:

nerve(s)

action(s)

anterior interosseous branch of median nerve

pronates the forearm

18

arteries of the flexor compartment of the forearm (2)

ulnar artery
radial artery

19

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

20

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

21

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

22

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

23

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

24

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

25

nerves of the flexor compartment (2)

median nerve
ulnar nerve

26

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

27

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

28

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

Decks in Anatomy Class (66):