| 释义 |
petrosal, a. (n.) Anat.|pɪˈtrəʊsəl|
[f. L. petrōs-us stony, rocky + -al1.]
a. Applied to the petrous portion of the temporal bone (petrosal bone, med.L. os petrōsum), and parts belonging to or connected with it; and to some branches derived from the facial and glossopharyngeal nerves that pass through the petrosal bone, and to the inferior ganglion of the glossopharyngeal nerve, situated in a notch in this bone.
1741Monro Anat. Bones (ed. 3) 118 A Vein..returns to the superior petrosal Sinus. 1835–6Todd Cycl. Anat. I. 739/2 The petrosal ridges form the sides of the triangle. 1854Owen Skel. & Teeth in Circ. Sc., Org. Nat. I. 192 It is excavated in front to lodge the petrosal cartilage. 1872Huxley Phys. viii. 198 The essential organ of the sense of Hearing..[is] lodged in the midst of a dense and solid mass of bone (from its hardness called petrosal), forming a part of the temporal bone. 1881A. L. Ranney Appl. Anat. Nervous Syst. ii. 179 (caption) A diagram of the branches of the facial nerve... 3, orifice of aqueduct of Fallopius; 4, large petrosal nerve; 5, small petrosal nerve; 6, external petrosal nerve. 1888W. R. Gowers Man. Dis. Nervous Syst. II. 250 The tympanic nerve of Jacobson (arising from the enlargement on the glosso-pharyngeal, termed the ‘petrosal ganglion’), forms, with the sympathetic, the tympanic plexus in the wall of the middle ear. 1934L. B. Arey Developmental Anat. (ed. 3) xvi. 438 The sensory fibres of the glossopharyngeal nerve arise from two ganglia, the superior ganglion closer to the brain and the petrosal ganglion farther peripherad on the trunk. 1972M. L. Barr Human Nervous Syst. viii. 128/2 The sensory fibres in question [sc. those for taste] leave the facial nerve in the greater petrosal branch at the level of the geniculate ganglion.
b. absol. as n. = Petrosal bone.
1848Owen Archetype & Homol. Vertebr. Skel. 13, I have substituted for ‘pars petrosa’ or ‘os petrosum’ the substantive term ‘petrosal’... ‘Petrosal’ has appeared to me to be the best English equivalent of Cuvier's ‘rocher’. 1878Bell Gegenbaur's Comp. Anat. 458 In all birds and Reptiles the petrosal (prootic) lies in front of the ex⁓occipital. |