aug 30 Flashcards
strong connective tissue that covers the palm of the hand
palmar aponeurosis
what is the common proximal tendinous attachment for the superficial, intermediate, and deep anterior forearm muscle layers
common flexor tendon
the common flexor tendon attaches where on the humerus?
medial epicondyle of the humerus
pronator teres, flexor carpi radialis, palmaris longus, and flexor carlpi ulnaris are muscles in what layer in the forearm?
superficial
proximal attachments for pronator teres
medial epicondyle, coronoid process of the ulna
distal attachment of pronator teres
middle, lateral surface of the radius
action of pronator teres
pronation of the radioulnar joint
superior attachment of flexor carpi radialis
medial epicondyle of the humerus
inferior attachment of flexor carpi radialis
base of the 2nd metacarpal
3 actions of flexor carpi radialis
radiocarpal joint flexion, radial deviation (abduction), elbow flexion (weak)
proximal attachment of palmaris longus
medial epicondyle of the humerus
distal attachment of palmaris longus
palmar aponeurosis
2 actions of palmaris longus
radiocarpal joint flexion, elbow flexion (weak)
proximal attachment of the humeral head of flexor carpi ulnaris
medial epicondyle of the humerus
proximal attachments of the ulnar head of flexor carpi ulnaris
olecranon and upper half of the posterior ulna
distal attachments of flexor carpi ulnaris
pisiform, hook of hamate, base of MC5
actions of flexor carpi ulnaris
radiocarpal joint flexion, ulnar deviation (adduction), elbow flexion (weak)
flexor digitorum superficialis is located in which muscle layer of the anterior forearm?
intermediate
proximal attachments of the humeroulnar head of flexor digitorum superficialis
medial epicondyle of the humerus, coronoid process of the ulna
proximal attachment of the radial head of flexor digitorum superficialis
anterior/superior radius
distal attachments of flexor digitorum superficialis
sides of the bases of the intermediate phalanges of the medial 4 digits
actions of flexor digitorum superficialis
2nd-5th CMC , MCP, and PIP joint flexion. radiocarpal joint flexion, elbow flexion (weak)
flexor digitorum profundus, flexor pollicis longus, and pronator quadratus are found in what muscle layer of the anterior forearm?
deep layer
proximal attachments of flexor digitorum profundus
proximal anterior surface of the ulna and interosseous membrane
distal attachment of flexor digitorum profundus
bases of the distal phalanges of the medial 4 digits
actions of flexor digitorum profundus
2nd-5th CMC , MCP, and IP joint flexion. radiocarpal joint flexion
proximal attachments of flexor pollicis longus
anterior middle surface of the radius and interosseous membrane
distal attachment of flexor pollicis longus
base of the distal phalanx of the 1st digit
what does flexor pollicis longus pass deep to?
flexor retinaculum
actions of flexor pollicis longus
IP joint flexion of the 1st digit. MCP, CMC joint flexion of the 1st digit
medial attachment of pronator quadratus
distal anterior ulna
lateral attachment of pronator quadratus
distal anterior radius
action of pronator quadratus
pronation (radioulnar joint)
2 muscles that rotate the arm/hand
pronator quadratus, pronator teres
3 muscles that flex the hand
flexor carpi radialis, flexor carpi ulnaris, palmaris longus
3 muscles that flex the digits in the hand
flexor digitorum superficialis, flexor digitorum profundus, flexor pollicis longus
brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris are found in what layer of the posterior forearm?
superficial layer
superior attachment of brachioradialis
lateral supracondylar ridge of the humerus (proximal part)
inferior attachment of brachioradialis
lateral distal radius
action of brachioradialis
elbow flexion
the extensor tendons at the wrist pass under what structure?
extensor retinaculum
proximal attachment of extensor carpi radialis longus
supracondylar ridge of the humerus (distal part)
distal attachment of extensor carpi radialis longus
base of MC2
actions of extensor carpi radialis longus
radiocarpal extension, radial deviation (abduction)
extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris share a proximal tendinous attachment. what is its name?
common extensor tendon
where does the common extensor tendon attach
lateral epicondyle of the humerus
superior attachment of extensor carpi radialis brevis
lateral epicondyle of the humerus via the common extensor tendon
distal attachment of extensor carpi radialis brevis
base of MC3
actions of extensor carpi radialis brevis
radiocarpal extension, radial deviation (abduction)
brachioradialis, extensor carpi radialis longus, and extensor carpi radialis brevis are grouped together and referred to as what?
the wad of iii
superior attachment of extensor digitorum
lateral epicondyle of the humerus via the common extensor tendon
inferior attachment of extensor digitorum
distal phalanges of the medial 4 digits
actions of extensor digitorum
2nd-5th MCP, IP extension. radiocarpal extension
superior attachment of extensor digiti minimi
lateral epicondyle of the humerus via the common extensor tendon
inferior attachment of extensor digiti minimi
extensor expansion of the 5th digit
action of extensor digiti minimi
extension of the 5th digit
superior attachment of extensor carpi ulnaris
lateral epicondyle of the humerus via the common extensor tendon
inferior attachment of extensor carpi ulnaris
base of MC5
actions of extensor carpi ulnaris
radiocarpal extension, ulnar deviation