| depressor anguli oris | <anatomy, muscle> Origin, lower border of mandible anteriorly; insertion, blends with other muscles in lower lip near angle of mouth; action, pulls down corners of mouth; nerve supply, facial. Synonym: musculus depressor anguli oris, musculus triangularis labii inferioris, musculus triangularis, triangular muscle. (05 Mar 2000) |
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| depressor fibres | Sensory nerve fibre's having pressure-sensitive nerve endings in the wall of certain arteries capable of activating blood pressure-lowering brainstem mechanisms when stimulated by an increase in intra-arterial pressure. (05 Mar 2000) |
| depressor labii inferioris | <anatomy, muscle> Origin, anterior portion of lower border of mandible; insertion, orbicularis oris musculus and skin of lower lip; action, depresses lower lip; nerve supply, facial. Synonym: musculus depressor labii inferioris, depressor muscle of lower lip, musculus quadratus labii inferioris, musculus quadratus menti. (05 Mar 2000) |
| depressor nerve of Ludwig | <anatomy, nerve> A branch of the vagus which ends in the aortic arch and base of the heart; composed entirely of afferent fibres; its stimulation elicits a brainstem reflex which causes slowing of the heart, dilation of the peripheral vessels, and a fall in blood pressure. Synonym: Cyon's nerve, depressor nerve of Ludwig, Ludwig's nerve. (05 Mar 2000) |
| depressor reflex | A fall in blood pressure due to peripheral vasodilation and cardiac inhibition by stimulations of terminations of a cardiac depressor nerve in the aortic arch and base of the heart. Synonym: aortic reflex, depressor reflex. (05 Mar 2000) |
| tongue depressor | An instrument with a broad flat extremity used for pressing down the tongue to facilitate examination of the oral cavity and pharynx. (05 Mar 2000) |
| acetabular lip | A fibrocartilaginous rim attached to the margin of the acetabulum of the hip bone. Synonym: labrum acetabulare, acetabular lip, circumferential cartilage, cotyloid ligament, ligamentum cotyloideum. (05 Mar 2000) |
| anterior lip of uterine os | The portion of the vaginal part of the uterine cervix that bounds the ostium anteriorly intervening between the ostium and the anterior vaginal fornix. It is slightly shorter than labium posterius. Synonym: labium anterius ostii uteri. (05 Mar 2000) |
| articular lip | A fibrocartilaginous lip around the margin of the concave portion of some joints. Synonym: labrum articulare, articular lip. (05 Mar 2000) |
| vestibular lip of limbus of spiral lamina | vestibular labium of limbus of spiral lamina |
| glenoidal lip | A ring of fibrocartilage attached to the margin of the glenoid cavity of the scapula to increase its depth. Synonym: labrum glenoidale, articular margin, circumferential cartilage, glenoid ligament, glenoidal lip, ligamentum glenoidale. (05 Mar 2000) |
| medial lip of linea aspera | The medial margin of the linea aspera of the femur that provides attachment for part of the vastus medialis muscle. Synonym: labium mediale lineae asperae. (05 Mar 2000) |
| rhombic lip | The thickened alar plate of the embryonic rhombencephalon. (05 Mar 2000) |
| cleft lip | <embryology, paediatrics> A genetic disorder that results in the failure of fusion in the upper lip. Also seen commonly in association with cleft palate. (13 Nov 1997) |
| posterior lip of uterine os | The portion of the uterine cervix that bounds the ostium posteriorly. It is slightly longer than labium anterius, intervening between the cervical canal and the posterior fornix of the vagina. Synonym: labium posterius ostii uteri. (05 Mar 2000) |