Assertion: mastoid process's portion | /r/HasProperty | derived
Facets:
value: evolutionarily
type: DEGREE
value: from all three germ layers
type: OTHER
value: from the second brachial arch
type: OTHER
Source sentences:
text: The anterolateral portion of the mastoid is derived from the squamous portion of the temporal bone; the posteromedial portion including the mastoid tip arises from the petrous
text: The stapes foot-plate has two layers: the tympanic portion, which is derived from the second brachial arch, and the vestibular portion (with its annular ligament), which develops from the otic capsule.81,84,85
text: Portions of the TM are derived from all three germ layers.
text: Evolutionarily, a portion of it is derived from the angular bone of the reptilian lower jaw.