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Comparative extraocular muscle blood flow

โœ Scribed by Wilcox, Lloyd M. ;Keough, Ellen M. ;Connolly, Raymond J. ;Hotte, Clifford E.

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
314 KB
Volume
215
Category
Article
ISSN
0022-104X

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โœฆ Synopsis

Abstract

This study was designed to quantitatively determine blood flow to the extraocular muscles (EOM) of animals showing a wide range of ocular motility. Bloodโ€flow values (ml/minute/gm) for EOM in primates (0.25 ยฑ 0.03), dogs (0.33 ยฑ 0.06), sheep (0.12 ยฑ 0.01), and geese (0.12 ยฑ 0.04) were determined using the Reference Sample Method with 15 ยฑ 3 ฮผm ^103^Ru microspheres and complete cardiovascular monitoring. Mammalian EOM blood flow was significantly higher than that determined for other skeletal muscle; however, EOM bloodโ€flow values for sheep were significantly lower than those for primates and dogs.

No significant bloodโ€flow differences were found between avian EOM and other skeletal muscle, reflecting the unique avian ocular anatomy. These data indicate that high blood flow is not a general property of EOM and suggest a relationship between functional ocular motility and blood flow.

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