Middle and anterior fibers: between the mandible and hyoid bone It forms the floor of the oral cavity and supports the floor of the mouth. Mylohyoid: The mylohyoid muscle is a paired muscle running from the mandible to the hyoid bone. Insertion: Junction of body and greater cornua of the hyoid bone Origin: Posterior surface of the styloid process Stylohyoid: The stylohyoid muscle is a thin muscular strip, that is positioned superiorly to the posterior belly of the digastric muscle. Insertion: Both heads meet at the intermediate tendon Posterior belly: mastoid notch of temporal bone This muscle assists in opening and closing the jaw.Īnterior belly: digastric fossa of mandible The arterial supply to these muscles of the facial artery, occipital artery, and lingual artery.ĭigastric (two belly): The digastric muscle is positioned in the neck, beneath the jaw. They are collectively working to elevate the hyoid bone and involved in swallowing. The suprahyoid muscles located superiorly to the hyoid bone of the neck. The suprahyoid muscles are a group of four muscles. Turns chin to the same side Suprahyoid Muscles Insertion: Transverse process of the atlas Obliquus capitis inferior: The obliquus capitis inferior is the most inferiorly positioned of the suboccipital muscles. Insertion: the Lateral area between the nuchal line Obliquus capitis superior: The obliquus capitis superior is located laterally in the suboccipital compartment. Insertion: Medial part of the area below the inferior nuchal line There is a connective tissue bridge within this muscle and the dura mater, which may perform a role in cervicogenic headaches. Rectus capitis posterior minor: The rectus capitis posterior minor is the most medial of the suboccipital muscles. Insertion: Lateral part of the area below the inferior nuchal line It comprises the posterosuperior boarder of the suboccipital triangle. Rectus capitis posterior major: The rectus capitis posterior major is located laterally to the rectus capitis posterior minor. Obliquus capitis inferior( inferior oblique).Obliquus capitis superior( superior oblique).They are collectively acting to extend and rotate the head. These muscles are located in the sternocleidomastoid, Trapezius, splenius and semispinalis muscles. The suboccipital muscles are a group of four muscles that located under the occipital bone.
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