| stratum griseum colliculi superioris | Term applied to any one of the three major layers of gray matter of the superior colliculus that alternate with layers composed chiefly of nerve fibres: 1) the superficial gray layer of superior colliculus, above the largely white layer of the incoming fibres of the optic tract (optic layer); 2) the middle gray layer of superior colliculus, placed between the optic layer and a more deeply located layer of fibres, the stratum lemnisci; 3) the deep gray layer of superior colliculus, between the stratum lemnisci and the central gray substance surrounding the cerebral aqueduct, and containing the large nerve cells from which most of the colliculus descending connections (tectobulbar, tectopontine, and tectospinal tract) originate. Synonym: stratum griseum colliculi superioris, stratum cinereum colliculi superioris. (05 Mar 2000) |
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| sulcus sinus petrosi superioris | A groove on the crest of the petrous portion of the temporal bone in which rests the superior petrosal sinus. Synonym: sulcus sinus petrosi superioris, superior petrosal sulcus. (05 Mar 2000) |
| sulcus sinus sagittalis superioris | The groove in the midline of the inner table of the calvaria lodging the superior sagittal sinus. Synonym: sulcus sinus sagittalis superioris, sagittal groove, sagittal sulcus, superior longitudinal sulcus. (05 Mar 2000) |
| superficial layer of the levator palpebrae superioris muscle | <anatomy> The superficial fibres of the levator muscle of the superior eyelid which are inserted into the skin of the superior eyelid. Synonym: lamina superficialis musculi levatoris palpebrae superioris. (05 Mar 2000) |
| deep layer of levator palpebrae superioris muscle | <anatomy> The deeper fibres of the levator muscle of the superior eyelid which are inserted into the superior tarsal plate. Synonym: lamina profunda musculi levatoris palpebrae superioris. (05 Mar 2000) |
| ostium venae cavae superioris | The point of entry of the superior vena cava into the right atrium. Synonym: ostium venae cavae superioris, orifice of superior vena cava. (05 Mar 2000) |
| tuberculum labii superioris | The slight projection on the free edge of the centre of the upper lip at the lower extent of the philtrum. Synonym: tuberculum labii superioris, procheilon, prochilon, tubercle of upper lip. (05 Mar 2000) |
| lamina profunda musculi levatoris palpebrae superioris | <anatomy> The deeper fibres of the levator muscle of the superior eyelid which are inserted into the superior tarsal plate. Synonym: lamina profunda musculi levatoris palpebrae superioris. (05 Mar 2000) |
| lamina superficialis musculi levatoris palpebrae superioris | <anatomy> The superficial fibres of the levator muscle of the superior eyelid which are inserted into the skin of the superior eyelid. Synonym: lamina superficialis musculi levatoris palpebrae superioris. (05 Mar 2000) |
| frenulum veli medullaris superioris | A band passing from the longitudinal groove between the quadrigeminal bodies on to the superior medullary velum. Synonym: frenulum veli medullaris superioris, cerebellar frenulum, frenulum cerebelli. (05 Mar 2000) |
| levator labii superioris | <anatomy, muscle> Origin, maxilla below infraorbital foramen; insertion, orbicularis oris of upper lip; action, elevates upper lip; nerve supply, facial. Synonym: musculus levator labii superioris, caput infraorbitale quadrati labii superioris, elevator muscle of upper lip. (05 Mar 2000) |
| levator labii superioris alaeque nasi | <anatomy, muscle> Origin, root of nasal process of maxilla; insertion, wing of nose and orbicularis oris muscle of upper lip; action, elevates upper lip and wing of nose; nerve supply, facial. Synonym: musculus levator labii superioris alaeque nasi, caput angulare quadrati labii superioris, elevator muscle of upper lip and wing of nose. (05 Mar 2000) |
| levator palpebrae superioris | <anatomy, muscle> Origin, orbital surface of the lesser wing of the sphenoid, above and anterior to the optic canal; insertion, skin of eyelid, tarsal plate, and orbital walls, by medial and lateral expansions of the aponeurosis of insertion; action, raises the upper eyelid; nerve supply, oculomotor. Synonym: musculus levator palpebrae superioris, elevator muscle of upper eyelid, musculus orbitopalpebralis, palpebralis. (05 Mar 2000) |