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Rats representing a 6.6\u2010fold size range were dissected, and muscles, tendons, and mandibles were weighed. Cross\u2010sectional areas of tendons and bones providing attachment surfaces for muscles were estimated. Ontogenetie scaling of Craniomandibular muscles, tendons, and bones was described by using linear regression models, and departures from size\u2010required compensations were used to characterize changes in oromotor function. A two\u2010dimensional model was developed which permitted calculation of mechanical advantages of four masticatory muscles; the model was used to show how mandibular growth and tooth eruption influence the biomechanics of rat feeding. Relative to mandible weight, most jaw muscles scaled either isometrically or positively, tendon cross\u2010sectional areas scaled isometrically or negatively, and bone surfaces scaled negatively. With the exception of the superficial masseter and internal pterygoid muscles, mechanical advantages did not change significantly during mandible growth. Growth patterns of Craniomandibular muscles, tendons, and bones contribute significantly to changes in morphology and oromotor function.<\/jats:p>","DOI":"10.1002\/aja.1001820409","type":"journal-article","created":{"date-parts":[[2005,2,27]],"date-time":"2005-02-27T02:31:54Z","timestamp":1109471514000},"page":"381-394","source":"Crossref","is-referenced-by-count":30,"title":["Growth allometry of craniomandibular muscles, tendons, and bones in the laboratory rat (<i>Rattus norvegicus<\/i>): Relationships to oromotor maturation and biomechanics of feeding"],"prefix":"10.1002","volume":"182","author":[{"given":"Jack","family":"Huhov","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Winsome","family":"Henry\u2010Ward","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lisa","family":"Phillips","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rebecca","family":"German","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,2,3]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9416(55)90005-1"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajpa.1330690406"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9416(78)90059-3"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7998.1983.tb04259.x"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-185X.1965.tb00808.x"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.1965.0033"},{"key":"e_1_2_1_8_1","first-page":"115","article-title":"The functional significance of muscle architecture\u2010a theoretical analysis","volume":"38","author":"Gans C.","year":"1965","journal-title":"Erge. 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