ANA 407 Lecture Notes - Lecture 27: Mandibular Foramen, Zygomatic Arch, Maxilla
24 Jun 2016
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Document Summary
The mandible is a single bone in adult humans. The alveolar part of mandible supports the lower (mandibular) toothrow, and the head participates in the temporomandibular (tm) joint. Other bony landmarks include the condyle, coronoid process, mandibular notch, mental protuberance and ramus, angle, body, lingula, mylohyoid line, and mental spines (genial tubercles) Prominent foramina include the mandibular foramen, which transmits the inferior alveolar n. and a. , and the mental foramen, through which passes the mental n. (a continuation of the inferior alveolar n. ). Muscles are the temporalis and masseter, both of which are powerful elevators of the jaw. These and the other muscles of mastication are all supplied by branches of the mandibular n (cn v3). Note by palpating just above your ear (pinna) that the posterior fibers of temporalis are active during chewing, but not so much during biting. The posterior fibers of temporalis retract as well as elevate the jaw.
