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  2. Muscles of mastication - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_mastication

    In humans, the mandible, or lower jaw, is connected to the temporal bone of the skull via the temporomandibular joint. This is an extremely complex joint which permits movement in all planes. The muscles of mastication originate on the skull and insert into the mandible, thereby allowing for jaw movements during contraction.

  3. Lateral pterygoid muscle - Wikipedia

    en.wikipedia.org/wiki/Lateral_pterygoid_muscle

    The lateral pterygoid muscle (or external pterygoid muscle) is a muscle of mastication. It has two heads. It lies superior to the medial pterygoid muscle. It is supplied by pterygoid branches of the maxillary artery, and the lateral pterygoid nerve (from the mandibular nerve, CN V 3). It depresses and protrudes the mandible. When each muscle ...

  4. Jaw jerk reflex - Wikipedia

    en.wikipedia.org/wiki/Jaw_jerk_reflex

    [1] [2] The mandible—or lower jaw—is tapped at a downward angle just below the lips at the chin while the mouth is held slightly open. In response, the masseter muscles will jerk the mandible upwards. Normally this reflex is absent or very slight. However, in individuals with upper motor neuron lesions the jaw jerk reflex can be quite ...

  5. Digastric muscle - Wikipedia

    en.wikipedia.org/wiki/Digastric_muscle

    The digastric muscle (also digastricus) (named digastric as it has two 'bellies') is a bilaterally paired suprahyoid muscle located under the jaw.Its posterior belly is attached to the mastoid notch of temporal bone, and its anterior belly is attached to the digastric fossa of mandible; the two bellies are united by an intermediate tendon which is held in a loop that attaches to the hyoid bone.

  6. Temporomandibular joint dysfunction - Wikipedia

    en.wikipedia.org/wiki/Temporomandibular_joint...

    Temporomandibular joint dysfunction (TMD, TMJD) is an umbrella term covering pain and dysfunction of the muscles of mastication (the muscles that move the jaw) and the temporomandibular joints (the joints which connect the mandible to the skull).

  7. Trismus - Wikipedia

    en.wikipedia.org/wiki/Trismus

    Trismus is defined as painful restriction in opening the mouth due to a muscle spasm, [5] however it can also refer to limited mouth opening of any cause. [6] Another definition of trismus is simply a limitation of movement. [4]

  8. Mylohyoid muscle - Wikipedia

    en.wikipedia.org/wiki/Mylohyoid_muscle

    The mylohyoid muscle elevates the hyoid bone and the tongue. This is particularly important during swallowing and speaking. Alternatively, if other muscles are used to keep the position of the hyoid bone fixed, then the mylohyoid muscle depresses the mandible. [1] It also functions as reinforcing the floor of mouth. [1]

  9. List of abductors of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_abductors_of_the...

    1.1 Arm and shoulder. 1.2 Hand and wrist. 2 Lower limb. 3 Other. 4 References. 5 See also. ... Gluteus maximus muscle; Gluteus medius muscle; Gluteus minimus muscle ...