From the 1st pharyngeal arch arise the upper and lower jaws.
With mesenchyma of the 1st and 2nd pharyngeal arches that surrounds it, the 1st pharyngeal pouch and cleft forms the numerous small parts of the middle ear and the external acoustic meatus, respectively.
The 2nd, 3rd and 4th pharyngeal clefts obliterate and form the surface of the neck.
www.embryology.chAus dem 1. Pharyngealbogen entsteht der Ober- und Unterkiefer.
Die 1. Schlundfurche bzw. Schlundtasche bildet mit dem sie umgebenden Mesenchym des 1. und 2. Pharyngealbogens die zahlreichen kleinen Anteile des Mittelohrs und den Meatus externus.
Die 2., 3. und 4. Schlundfurche obliterieren und bilden die Oberfläche des Halses.
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