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12 Cards in this Set
- Front
- Back
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Extensors & supinators are found on which aspects of the limb? |
cranial & lateral |
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Which muscles are the supinators? |
Brachioradialis
+
Supinator |
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Extensor retinaculum |
Extensor retinaculum
-part of carpal fascia -holds extensor tendons in place @ carpus
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Brachioradialis m. (cat) |
Brachioradialis m. - cat
O: middle fifth of humerus I: styloid process of radius N: Radial n. A: supination of the antebrachium |
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Brachioradialis m. (dog) |
Brachioradialis m. - dog
O: lateral supracondylar crest of humerus I: distal fourth of the radius N: Radial n. A: supination of antebrachium |
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Extensor carpi radialis m. |
Extensor carpi radialis m.
O: lateral supracondylar crest of humerus (cat has 2 heads) I: dorsal surfaces of base of metacarpals II & III (cat: long on MC II, short on MC III) N: Radial n. A: extension of carpus (1) flexion of elbow (2) |
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Common digital extensor m. |
Common digital extensor m.
O: lateral epicondyle of humerus I: extensor processes of distal phalanges of digits 2-5 N: Radial n. A: extension of carpus (1) extension of joints of digits 2-5 (2) |
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Dorsal elastic ligaments |
Dorsal elastic ligaments
2 on each middle phalanx
A: hyperextend distal interphalangeal jt.; retract claw |
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Lateral digital extensor m. |
Lateral digital extensor m.
O: lateral epicondyle of humerus (dog) lateral supracondylar ridge (cat) I: *joins common digital extensor tendons* extensor processes of distal and middle phalanges of digits 3-5 (dog), 2-5 (cat) N: Radial n. A: extension of carpus (1) extension of joints of digits 3-5 (2) |
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Extensor carpi ulnaris (ulnaris lateralis) m. |
Extensor carpi ulnaris (Ulnaris lateralis) m.
O: lateral epicondyle of humerus I: proximal end of metacarpal V & accessory carpal bone (dog); only MC V (cat) N: Radial n. A: primarily supports the carpus "anti- hyperextender" (1) abduction of carpus (2) |
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Supinator m. |
Supinator m.
O: lateral epicondyle of humerus I: cranial surface of proximal fourth of radius N: Radial n. A: supination of antebrachium (1) flexion of the elbow (2) |
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Abductor pollicis longus m. |
Long abductor of digit I (abductor pollicis longus, extensor carpi obliquus) m.
O: lateral border and cranial surface of body of ulna, interosseous membrane (dog); also radius in cat (hence greater movement of 1st digit) I: proximal end of metacarpal 1 N: Radial n. A: abduction of digit 1 (1) extension of the carpus (2) |
