plural of superior rectus

(anatomy) A long thin extraocular muscle that arises just above the margin of the optic foramen, is inserted on the upper part of the eyeball, and moves the eye downward and laterally.

(anatomy) A 4-sided muscle of the pharynx that arises from the posterior and medial parts of the pterygoid plate, from the pterygomandibular raphe, from the alveolar process above the end of the mylohyoid line, and from the side of the tongue, that inserts into the median line at the back of the pharynx, and that acts to constrict part of the pharynx in swallowing.

(anatomy) A smooth muscle helping to raise the upper eyelid.

(anatomy) An artery that arises from the basilar artery just before it divides to form the posterior cerebral arteries and supplies or gives off branches supplying the superior part of the cerebellum, midbrain, pineal gland, and choroid plexus of the third ventricle.

(anatomy) A branch of the maxillary artery that supplies the upper molar and bicuspid teeth.

(anatomy) Either of the two terminal branches of each external carotid artery that pass upward over the zygomatic process of the temporal bone, and are distributed by way of branches especially to the more superficial parts of the forehead and sides of the head and face.

(anatomy) One of two arteries supplying the thyroid gland and nearby structures at the front of the neck that branches from the external carotid artery or sometimes from the common carotid artery at the level of the thyrohyal of the hyoid bone and that gives off branches to nearby muscles and to the thyroid gland.

(anatomy) A branch of the superior thyroid artery or sometimes of the external carotid artery that supplies the muscles, mucous membranes, and glands of the larynx and anastomoses with the branch from the opposite side.

plural of superficial fascia