Elevator muscle of anus
elevator muscle of anus n.
A muscle formed by the puborectal muscle, the elevator muscle of the prostate, the pubococcygeal muscle, and the iliococcygeal muscle, with origin from the back of the pubis and the spine of the ischium, with insertion into the anococcygeal ligament and the sides of the lower part of the sacrum and coccyx, with nerve supply from the fourth sacral nerve, and whose action draws the anus upward in defecation and supports the pelvic viscera.
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elevator muscle of prostate n. The most medial muscular fibers of the elevator muscle of the anus in the male.
- Elevator muscle of scapula
elevator muscle of scapula n. A muscle with origin from the posterior tubercles of the transverse processes of the four upper cervical vertebrae, with insertion into the superior angle of the scapula, with nerve supply from the dorsal nerve of the scapula, and whose action raises the scapula.
- Elevator muscle of soft palate
elevator muscle of soft palate n. A muscle with origin from the temporal bone and the lower part of the auditory tube, with insertion into the soft palate, with nerve supply from the pharyngeal plexus, and whose action raises the soft palate.
- Elevator muscle of thyroid gland
elevator muscle of thyroid gland n. A band of muscular fibers occasionally passing from the thyrohyoid muscle to the isthmus of the thyroid gland.
- Elevator muscle of upper lip
elevator muscle of upper lip n. A muscle with origin from the maxilla below the infraorbital foramen, with insertion to the orbicular muscle of the upper lip, with nerve supply from the facial nerve, and whose action elevates the upper lip.