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The Jaw Adductor Resultant and Estimated Bite Force in Primates
Joint Authors
Hartstone-Rose, Adam
Logan, Rachel L.
Perry, Jonathan M. G.
Source
Anatomy Research International
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-07-24
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
We reconstructed the jaw adductor resultant in 34 primate species using new data on muscle physiological cross-sectional area (PCSA) and data on skull landmarks.
Based on predictions by Greaves, the resultant should (1) cross the jaw at 30% of its length, (2) lie directly posterior to the last molar, and (3) incline more anteriorly in primates that need not resist large anteriorly-directed forces.
We found that the resultant lies significantly posterior to its predicted location, is significantly posterior to the last molar, and is significantly more anteriorly inclined in folivores than in frugivores.
Perhaps primates emphasize avoiding temporomandibular joint distraction and/or wide gapes at the expense of bite force.
Our exploration of trends in the data revealed that estimated bite force varies with body mass (but not diet) and is significantly greater in strepsirrhines than in anthropoids.
This might be related to greater contribution from the balancing-side jaw adductors in anthropoids.
American Psychological Association (APA)
Perry, Jonathan M. G.& Hartstone-Rose, Adam& Logan, Rachel L.. 2011. The Jaw Adductor Resultant and Estimated Bite Force in Primates. Anatomy Research International،Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-509020
Modern Language Association (MLA)
Perry, Jonathan M. G.…[et al.]. The Jaw Adductor Resultant and Estimated Bite Force in Primates. Anatomy Research International No. 2011 (2011), pp.1-11.
https://search.emarefa.net/detail/BIM-509020
American Medical Association (AMA)
Perry, Jonathan M. G.& Hartstone-Rose, Adam& Logan, Rachel L.. The Jaw Adductor Resultant and Estimated Bite Force in Primates. Anatomy Research International. 2011. Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-509020
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-509020