membrane bone


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membrane bone

[′mem‚brān ‚bōn]
(anatomy)
References in periodicals archive ?
First ossification of Dentary Premaxilla Maxilla Frontal Jugal Parietal Squamosal Alisphenoid Basioccipital Basisphenoid Exoccipital Periotic Other skeletal elements Membrane bones approach midline Cartilage in basioccipital region Closure of secondary palate First appearance of tooth buds Differentiation of malleus and incus Differentiation of condylar cartilage Joint capsule at dentary-squamosal joint Muscle First alignment of myoblasts (tongue) First appearance of striations Craniofacial muscles distinguishable Central nervous system Evagination of telencephalon Differentiation of pigment in retina Connections between olfactory nerve and epithelium Layering in cortex Swelling of thalamus and hypothalamus Primary lens cells fill lens vesicle Developmental Events Examined
The specimen in which the membrane bones of the cranial roof - primarily the frontal and parietal - approached the midline and each other was noted.
Therefore, in particular for the membrane bones of the cranial roof, it is possible that actual first ossification occurred earlier than is documented here.

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