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The insect's outer skeleton, the cuticle, consists of two layers; the epicuticle, which is a thin, waxy, water-resistant outer layer that lacks chitin, and the layer under it is called the procuticle. This is chitinous and much thicker than the epicuticle and has two layers, the outer is the exocuticle while the inner is the endocuticle.
The portion of the pleura seen as the outer layer covers the chest wall, the diaphragm and the mediastinum and is often also misleadingly called the parietal pleura. A correct anatomical nomenclature refrains from using the ambiguous terms visceral and parietal in favour of a 4-portion system based on the structures the pleura covers: pulmonary ...
The micropyle is situated on top in eggs which are globular, conical, or cylindrical; in those eggs which are flattened or lenticular, the micropyle is located on the outer margin or rim. [18] [62] The eggs of Lepidoptera are usually rounded and small (1 mm) though they may be as large as 4 mm in the case of Sphingidae and Saturniidae.
The gastrointestinal wall of the gastrointestinal tract is made up of four layers of specialised tissue. From the inner cavity of the gut (the lumen ) outwards, these are the mucosa , the submucosa , the muscular layer and the serosa or adventitia .
Opposite to outermost (the adventitia, serosa, or the cavity's wall). [54] Parietal (from Latin paries 'wall'): pertaining to the outer wall of a body cavity. [55] For example, the parietal peritoneum is the lining on the inside of the abdominal cavity. Parietal can also refer specifically to the parietal bone of the skull or associated structures.
Plan of the outer and inner baileys of Alt-Trauchburg Castle (Germany). The Graben is the neck ditch, and to its right is the inner bailey, accessible over a wooden bridge. Topoľčany Castle with an inner and an outer bailey. The inner bailey or inner ward of a castle is the strongly fortified enclosure at the heart of a medieval castle. [1]
The parietal wall with the outer lip (labrum): the area next to the penultimate whorl of the shell. The siphonal notch is situated at the top. The columellar wall with the columellar lip (labium): the wall next to the columella. The siphonal canal is situated at its base. The palatal wall: the outer free wall of the final whorl of the shell.
The lateral malleolus is the prominence on the outer side of the ankle, formed by the lower end of the fibula. The word malleolus (/ m ə ˈ l iː ə l ə s, m æ-/ [1] [2]), plural malleoli (/ m ə ˈ l iː ə ˌ l aɪ, m æ-/), comes from Latin and means "small hammer". (It is cognate with mallet.)