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Sometimes apical is used exclusively for an articulation that involves only the tip of the tongue and apicolaminal for an articulation that involves both the tip and the blade of the tongue. [3] However, the distinction is not always made and the latter one may be called simply apical, especially when describing an apical dental articulation.
Stereocilia (or stereovilli or villi) are non-motile apical cell modifications. They are distinct from cilia and microvilli, but are closely related to microvilli. They form single "finger-like" projections that may be branched, with normal cell membrane characteristics. They contain actin.
Epithelial cells in culture grow normally as tight clusters. However, they could be induced to break cell-cell contacts and become elongated and motile after exposure to a "scatter factor" that was secreted by mesenchymal cells such as Swiss 3T3 fibroblasts. [12] This was best described by Julia Gray's group in 1987. [13]
Epithelial polarity is one example of the cell polarity that is a fundamental feature of many types of cells. Epithelial cells feature distinct 'apical', 'lateral' and 'basal' plasma membrane domains. Epithelial cells connect to one another via their lateral membranes to form epithelial sheets that line cavities and surfaces throughout the ...
Progression of a Histocytoma on a French Bulldog Ear -2 months time A histiocytoma on the ear of a dog Canine Cutaneous Histiocytoma on a young boxer dog. A histiocytoma in the dog is a benign tumor. It is an abnormal growth in the skin of histiocytes (histiocytosis), a cell that is part of the immune system.
In phonetics, a trill is a consonantal sound produced by vibrations between the active articulator and passive articulator. Standard Spanish rr as in perro, for example, is an alveolar trill.
The fricative component is apical. Contrasts with a laminal affricate with a dentalized fricative component. [5] Catalan [27] potser [puˈt̻͡s̺(ː)e] 'maybe' The fricative component is apical. Only restricted to morpheme boundaries, some linguistics do not consider it a phoneme (but a sequence of [t] + [s]).
A kinocilium is a special type of cilium on the apex of hair cells located in the sensory epithelium of the vertebrate inner ear. Contrasting with stereocilia, which are numerous, there is only one kinocilium on each hair cell. The kinocilium can be identified by its apical position as well as its enlarged tip. [1]