Elbow/Cubital Fossa/Forearm Flashcards
the elbow joint has ___ articulations and ___ movements
three; two
proximal radio-ulnar joint allows for ___ and ____
pronation; supination
the elbow joint has articular surfaces covered in ____, a ____ and a ____ membrane
hyaline cartilage; synovial membrane; fibrous
elbow ligaments:
radial collateral ligament, ulnar collateral ligament, and anular ligament
radial collateral ligament (RCL) resists ___ forces
varus (from midline)
ulnar collateral ligament (UCL) resists ____ forces
valgus (toward midline)
when radial head subluxates or dislocates from the anular ligament ; muscle pulls radial head superiorly
nursemaid elbow
boundaries of the cubital fossa
lateral: brachioradialis m.
medial: pronator teres m.
base: imaginary line connecting medial and lateral epicondyles
floor: brachialis m.
contents of the cubital fossa
from lateral to medial: tendon of biceps brachii, brachial artery, median nerve
the median n. leaves the cubital fossa by leaving through the 2 heads of ___
pronator teres
roof of the cubital fossa
skin, superficial fascia, superficial veins, deep fascia, and the bicipital aponeurosis
mm of the anterior compartment of the forearm will:
flex the wrist, flex the digits, and pronate the hand
mm of the posterior compartment of the forearm will:
extend the wrist, extend the digits, and supinate the hand
the distal radio-ulnar joint is between the ____ and ____
ulnar notch of the radius; head of the ulna
the interosseous membrane consists of ____
dense regular connective tissue
all mm. of the ant compartment of the forearm are innervated by the ____ except for ____and the medial half of _____
median n.; flexor carpi ulnaris; flexor digitorum profundus
superficial mm. of the forearm
pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris
A and inn. of pronator teres
pronate the forearm; median n.
pronator teres has 2 heads: one on the ___ and the other on the ____
medial epicondyle; coronoid process of the ulna
A and inn of flexor carpi radialis
flexion and abduction of the wrist; median n.
A and inn of palmaris longus
flex wrist and tense aponeurosis; median n.
two heads of flexor carpi ulnaris
medial epicondyle of the humerus and olecranon of the ulna
A and inn of flexor carpi ulnaris
flex and adduct wrist; ulnar n.
A and inn of flexor digitorum superficialis
quick flexion of proximal interphalangeal joints (PIPs) and metacarpophalangeal joints (MPs) of digits 2-5 ; median n.
A and inn of flexor digitorum profundus
slow flexion of distal interphalangeal joints (DIPs) and MPs of digits 2-5 ; digits 2-3 innervated by median n. and digits 4-5 innervated by ulnar n.
A and inn of flexor pollicis longus
flex the interphalangeal and MP joints of the thumb; median n.
A and inn of pronator quadratus
pronation; median n.
structures that pass through the carpal tunnel
tendons of flexor digitorum superficialis (4), tendons of flexor digitorum profundus (4), tendon of flexor pollicis longus (1), and the median nerve
posterior forearm - superficial mm.
anconeus brachioradialis extensor carpi radialis longus extensor carpi radialis brevis extensor digiti minimi extensor carpi ulnaris
posterior forearm - deep mm.
supinator abductor pollicis longus extensor pollicis longus extensor pollicis brevis extensor indicis
A and inn of brachioradialis
accessory flexor at elbow; radial n.
A and inn of anconeus
accessory extensor of the elbow; radial n.
A and inn of extensor carpi radialis longus
extension and abduction of the wrist; radial n.
A and inn of extensor carpi radialis brevis
extension and abduction of the wrist; radial n.
A and inn of extensor digitorum
extends digits 2-5; radial n.
A and inn of extensor digiti minimi
extend digit 5; radial n.
A and inn of extensor carpi ulnaris
extend and adduct wrist; radial n.
