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
