Chapter 12 : Anatomy of the larynx and tracheobronchial tree
نویسنده
چکیده
During the fourth week of embryonic development, the rudiment of the respiratory tree appears as a median laryngotracheal groove in the ventral wall of the pharynx. The groove subsequently deepens and its edges fuse to form a septum, thus converting the groove into a splanchnopleuric laryngotracheal tube. This process of fusion commences caudally and extends cranially but does not involve the cranial end where the edges remain separate, bounding a slit-like aperture through which the tube opens into the pharynx.
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تاریخ انتشار 2008