pterygoideus medialis

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pterygoideus medialis

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The parapharyngeal space is a potential space that extends from the skull base to the hyoid bone; it is bound medially by the pharyngeal constrictors and laterally by the mandible and medial pterygoid muscle.
Infection may also spread to the medial pterygoid or masseter muscles.
Extension into the parapharyngeal space may involve the medial pterygoid muscles (leading to trismus).
5 mm bony lesion of the mandibular angle, eroding the cortex and infiltrating the associated medial pterygoid muscle, was revealed (Fig 2b).
It is defined superiorly by the temporal bone, posteriorly by the vertebrae and prevertebral muscles including their fasciae, and laterally by the mandible, the posterior belly of the digastric muscle and the medial pterygoid muscle.
Musculature removed during and debridement Retropharyngeal area Prevertebral fascia Longus capitis Longus colli Rectus capitis anterior Temporal fossa Medial pterygoid Lateral pterygoid Lower portion of temporalis Tensor veli palatini Levator veli palatini Portion of superior pharyngeal constrictor Portion of middle pharyngeal constrictor Neck Upper portion middle scalene Levator scapulae Splenius capitis Trapezius Sternocleidomastoid Occipitalis Longissimus capitis Semispinalis capitis Obliquus capitis superior Obliquus capitis inferior Rectus capitis posterior major Rectus capitis posterior minor Posterior belly digastric Stylohyoid Styloglossus Stylopharyngeus Buccinator
The third clue to the fossil baby's species comes from bony protrusions for a chewing muscle know as the medial pterygoid.
The muscle markings end at a bondy lip, which served as an anchor for the medial pterygoid, the Israeli researcher notes.
Computed tomography (CT) and magnetic resonance imaging (MRI) of the mass demonstrated discrete areas of calcification arising from the condyle of the left mandible, with extension along the skull base and the medial pterygoid muscles (figure).
The upper part of the lateral surface is in contact with the submandibular fossa of the mandible and the medial pterygoid muscle below the mylohyoid ridge.
The mouth is held closed by the action of the medial pterygoids, masseter, and temporalis muscles.

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