a a horseshoe-shaped body
a pair of rami
The body
of two lateral parts which are united anteriorly in the midline
where a vertical ridge, the symphysis menti, indicates the
site of the fusion.
The ridge of the symphysis menti terminated below in
the mental protuberance
The ramus
projecting upwards from the body posteriorly on each
side, which is flattened vertical plate of bone
The angle
The posterior margin of the ramus meets the lower border of
the body
The coronoid process
the mandibular notch
The Condyloid process
a head with an articular surface above
a lower narrower portion, the neck
The head articulates with the squamous part of the temporal
bone at the tempromandibular joint.
The alveolar margin
the base
the mental foramen
The oblique line passes upwards and backwards from the
mental foramen and becomes continuous with the anterior
margin of the ramus.
The digastric fossa
small roughened depression on the base, on the either side of
the symphysis menti
The inner aspect
the mental spines
The mylohyoid ridge
The sublingual fossa
The submandibular fossa
Two small tubercles lie close to the midline Two small
tubercles lie close to the midline
The lingual nerve lies on the bone just above the
posterior end of the mylohyoid ridge.
The mandibular foramen
At about the middle of the inner surface of the ramus, about
the level of the crown of the last molar tooth
The sharp and prominent anterior margin of the foramen is
called the lingula
The mandibular canal
the mylohyoid groove
The head
The heada convex and transversely elongated articular
surface
The long axis of the head is directed obliquely so that if the
axes of both sides were continued medially they would meet
near the anterior margin of the foramen magnum, at an
angle of 140-159.
The coronoid process
directed upwards as a flattened triangular projection
directed upwards as a flattened triangular projection
Its anterior border is continuous with the sharp anterior
margin of the ramus.