How did this proliferation of limbs, teeth, and vertebrae, not to mention the complexity we can infer about the overlying anatomy and physiology, arise from the simple early forms of animal life? How did DNA evolve to contain the program for such complexity?doi:10.1002/evan.1360020407...
The cross-sectional anatomy of some roots reveals substantial dentin surrounding the apical foramen, while in others the dentin surrounding the canal is sparse. The No. 3 Osteo-Loc stabilizer implant, 0.044 inches in major diameter, is generally used for the mandibular incisors and maxillary ...
‘plated skin’, referring to their characteristic mosaic of overlapping dermal plates that enveloped the head and trunk region (Figure 3). They possessed shark-like heterocercaltailsand in their overall anatomy were very much akin to chondrichthyans, although recent discoveries from the Late ...
such as 16 times of magnification, can help in determining fine edges and examining the position and morphology of the edges, inspecting the position of the restoration, and removing
Each week during the conduction of the dental anatomy practical course, students were given a lecture on the anatomy and morphology of a specific tooth. The following week, the students learn how to carve a model of the same tooth in the laboratory session through a live demonstration. After ...
six major clades and 18 isolated lineages independently evolved multicuspid teeth from a unicuspid ancestral morphology, mostly through single-cusp addition events, for a total of 24 independent originations of complex teeth (see Fig.2and Supplementary Fig.6for the names and positions of major clad...
Describe the anatomy, histology, and functions of the large intestine. What are the functions of the three subdivisions of the pharynx? What are the functions of the periosteum? Explain in detail how the shape or morphology of the alveolar surface and ear pinna affects its function. ...
In addition to morphology, the structural composition also influences functionality. For reconstructing the evolutionary history of the African Paludomidae and to develop hypotheses on the role of trophic specialisation in their evolution, we here identified the hardness and elasticity of taenioglossan ...
However, these foramina are not present in all taxa within the relevant clades, and they differ from the sulci of baleen-bearing mysticetes in size, orientation, and overall morphology [2, 6, 14]. Moreover, similar foramina have been described in the basilosaurid Dorudon atrox [15] (a ...
Dental anatomy Enamel Enamel is the hardest and most dense substance in the body. Due to its high (96–98 %) mineral content, it is almost translucent, and gains its color from that of the underlying dentin. Being ectodermal in origin, much of its limited organic component is composed ...