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Arch 1 gives rise to which skeletal structures?
Maxilla, Mandible, Zygomatic, Temporal, Malleus, Incus
Stapes, Styloid Process, Upper half of Hyoid Body and Lesser horns
Sphenoid, Occipital, Parietal
Nasal, Lacrimal, Inferior Nasal Conchae
The correct answer is: Maxilla, Mandible, Zygomatic, Temporal, Malleus, Incus
The reason B,C and D are incorrect is that B) The stapes, styloid process, upper half of hyoid body and lesser horns are derived from Pharyngeal arch 2. C) The sphenoid, occipital and parietal bones are derived from the neural crest and not from any specific arch. D) The nasal, lacrimal and inferior nasal conchae are derived from the frontonasal prominence and the lateral nasal prominences. These structures are not derived from a specific arch.