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Decapoda is an order of crustaceans of the sub-class Malacostraca. The carapace completely covers the thorax. The exopodite of the maxilla is large. There are three pairs of maxillipeds.
 Research Decapoda
The Eastern Hedgehog (Erinaceus concolor) is a European species of hedgehog that differs from the Western Hedgehog in having throat and chest paler than belly. The skull has a postero-dorsal process on the maxilla extending behind the lachrymal foramen.
Research Eastern Hedgehog
The Western Hedgehog (Erinaceus europaeus) is a European species of hedgehog that has uniform colouring on the underside. The skull has a short postero- dorsal process on the maxilla, which does not extend behind the lachrymal foramen.
Research Western Hedgehog
The alveolar process is the lower part of the maxilla where the teeth are mounted. At each tooth site on the alveolar process is a rounded bump, showing where the roots of the teeth, their nerves, and the blood vessels which nourish them lie beneath.
Research Alveolar Process
Alveolus are the bone cavities in the mandible or maxilla in which the teeth are anchored. The teeth are anchored in these sockets by the root canals, or cones, of the teeth. The nourishing blood vessels and nerves pass from the tooth socket into the tooth by way of the apical foramina in the bottom of each root cone.
Research Alveolus
The anterior nasal spine is a small protrusion at the base of the nasal cavity, just above the teeth. This spine juts out slightly beyond the plane of the maxilla and serves to anchor the nasal cartilage.
Research Anterior Nasal Spine
The incisive fossa is the surface of the inner part of the maxilla, just behind the teeth. It features the incisive foramen, an opening which lies directly behind the central incisors mounted in the maxilla, at the median palatine suture. The incisive foramen leads to a channel which proceeds upward through the maxillary bone, to terminate in the nasal crest of the maxilla, at the floor of the nasal cavity.
Research Incisive Fossa
The inferior nasal conchae (or turbinates) are the lower pair of curved ledges on the walls of the nasal cavity. Though the upper two pairs are protrusions of the ethmoid bone, this lower pair is attached directly to the maxilla.
Research Inferior Nasal Concha
The inferior oblique is a thin narrow muscle that originates from the orbital surface of the maxilla and extends along the inner side of the eyeball. It helps move the eye sideways and rotates it slightly. The inferior oblique muscle works in conjunction with the other eye muscles to move the eye. These muscles are anchored to the sclera near the cornea. The
inferior oblique muscle is innervated by the third cranial (oculomotor) nerve.
Research Inferior Oblique
Interproximal spaces are spaces between teeth in the dental arcade. In many adults, the permanent teeth develop in contact with their neighboring teeth, such that the
interproximal spaces disappear. This condition is particularly common in cases where the mandible or maxilla are relatively small, and newly developing third molars (wisdom teeth) cause teeth in the arcade to grow closer together to admit them.
Research Interproximal Spaces
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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Abbreviations
