(anatomy) The larger of the two petrosal sinuses that is situated inferiorly in a sulcus on each side formed by the junction of the petrous portion of the temporal bone and the basilar portion of the occipital bone and that extends from the posterior inferior end of the cavernous sinus through the jugular foramen to join the internal jugular vein of the same side.

(anatomy) One of two venous sinuses of the dura mater lying in the posterior two thirds of the concave free inferior margin of the falx cerebri and ending posteriorly by joining the great cerebral vein to form the straight sinus.

(anatomy) Synonym of inferior alveolar artery.

(anatomy) A branch of the inferior thyroid artery that supplies the muscles and mucous membranes of the dorsal part of the larynx.

(anatomy) A muscle of the pharynx that is the thickest of its three constrictors, arises from the surface and side of the cricoid and thyroid cartilages, inserts into the median line at the back of the pharynx, and acts to constrict part of the pharynx in swallowing.

(anatomy) A branch of the maxillary artery that is distributed to the mucous membrane of the mouth and through the mandibular canal to the teeth of the lower jaw.

(anatomy) A short extraocular muscle that arises from the orbital surface of the maxilla, is inserted slightly in front of and below the superior oblique muscle, and moves the eye upward and laterally.

(anatomy) One of two arteries supplying the thyroid gland and nearby structures at the front of the neck that branches from the thyrocervical trunk and that divides to form branches supplying the inferior portion of the thyroid gland and anastomosing with the superior thyroid artery or with a corresponding branch from the opposite side.

(anatomy) One of two openings transmitting nerves and blood vessels to or from the orbit, situated inferiorly between the greater wing of the sphenoid bone and the maxilla.

(anatomy) The third major branch of the abdominal aorta, supplying the distal one-third of the transverse colon, descending colon, sigmoid colon and the proximal part of the rectum, i.e. the organs of the hindgut.