Diarthroses in the mouse: from different cellular structure to similar joint appearance.
The structure and function of two major joints, the humeroscapular and the squamoso-mandibular joints in mice, are compared. The specific roles that these two joints fulfill during early postnatal period are reflected in a different cellular organization observed in them. Following maturation, when similar functional needs are stressed upon these two joints, similar homologous structures are detected in both of them. A possible conceptual explanation for these observations and their relatedness to the human equivalent joints are discussed.
Livne
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Division of Morphological Sciences, Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa.
D000818:Animals; D000831:Animals, Newborn; D006132:Growth Plate / Q000033:anatomy & histology* / Q000254:growth & development / Q000502:physiology; D006811:Humerus / Q000033:anatomy & histology* / Q000254:growth & development / Q000502:physiology; D008335:Mandibular Condyle / Q000033:anatomy & histology* / Q000254:growth & development / Q000502:physiology; D051379:Mice; D008813:Mice, Inbred ICR; D012785:Shoulder Joint / Q000033:anatomy & histology* / Q000254:growth & development / Q000502:physiology; D013704:Temporomandibular Joint / Q000033:anatomy & histology* / Q000254:growth & development / Q000502:physiology