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Flashcards in Forearm Deck (43)
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1

What are the bones of the forearm?

ulna and radius

2

What are the main joints of the forearm

elbow and wrist

3

Where do the radius and ulna also articulate with one another?

at the proximal and distal radio-ulnar joint

4

What bones compose the elbow joint?

proximal radius, proximal ulna and distal humerus

5

What is the function of the elbow joint?

flexion and extension of the forearm

6

Where on the elbow joint is the radical collateral ligament?

lateral side of the elbow joint

7

Where on the elbow joint is the ulnar collateral ligament?

medial side of the elbow joint

8

What elbow ligament is easily injured in children by sudden pull on an extended arm?

annular ligament

9

Where on the elbow joint is the annular ligament?

encircles and stabilize date head of the rations in relation to the ulna

10

Where is the wrist/radiocarpal joint?

articulation between the distal radius and the proximal row of carpal bones (scaphoid, lunate and triquetrum)

11

What does the radoiocarpal articulation allow for?

flexion, extension, abduction an adduction fo the hand

12

What doe the proximal and distal radioulnar joints allow for?

pronation and supination fo the forearm and hand.
supination radius and ulna parallel
pronation radius rotates over ulna

13

What are the 2 compartments of the forearm?

anterior and posterior

14

What separates the 2 compartments of the forearm?

interosseous membrane between the radius sand ulna and the medical and lateral intermusclar septum

15

What do the muscles of the anterior compartment of the forearm do?

flex the wrist and digits, pronate the hand, flex the thumb and abduct and adduct the hand (lateral and medical deviation or radial and ulnar deviation)

16

What are the innervations of the anterior compartment of the forearm?

All are innervated by the median nerve EXCEPT for 2 muscles flexor carpi ulnas and the ulnar/medial half of flexor digitorum profundus that are innervated by the ulnar nerve.

17

where does the blood supply of the anterior compartment of the forearm come from?

branches of the radial and ulnar arteries

18

What do the muscles of the posterior compartment of the forearm do?

extend the wrist and digits, supinate the hand and extend and abduct the thumb

19

What are the innervation(s) of the posterior compartment of the forearm?

radial nerve

20

where does the blood supply of the posterior compartment of the forearm come from?

branches of the radial and ulnar arteries

21

What are the muscles in the anterior compartment of the forearm?

pronator teres, flexor carpi radialis, flexor carpi ulnaris, palmares longus, flexor digitorum superficialis, flexor digitorium profundus, pronator quadratus

22

What are the muscles in the posterior compartment of the forearm?

extensor carpi ulnas, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor indicis, abductor pollicis longus, extensor pollicis longus, extensor pollicis brevis, supinator, brachioradialis

23

what is the movement of the carpometacarpal joints?

relatively immoveable

24

what is the movement of the metacarpophalangeal joints?

flexion and extension and abduction and adduction of the digits

25

interphalangeal joint

only one at the thumb. allow for flexion and extension of the middle and distal phalanx

26

what is the additional movement of the thumb?

opposition (thumb to pinki)

27

what are intrinsic muscles of the hand?

has both of its attachments in the hand

28

what are extrinsic muscles of the hand?

has one of its attachments outside the hand in the forearm

29

What are the superficial muscles of the hand?

3 muscles that form the thenar pad, 3 muscles that form the hypothenar pad, lumbricals and adductor pollicis

30

What is the innervation or the superficial muscles of the hand?

all innervated by the ulnar nerve EXCEPT the lateral 2 lumbricals and 3 thenar muscles they are innervated by the median nerve.