| 释义 |
myoid, a. and n.|ˈmaɪɔɪd|
[f. myo- + -oid.]
A. adj. Resembling muscle; composed of muscular tissue.
1857Dunglison Dict. Med. Sci. (rev. ed.) 616/1 Myoid, an epithet given to tumours composed of fibre cells or muscular fibres of organic life. 1970Amer. Jrnl. Anat. CXXIX. 399 (heading) Myoid elements in the mammalian nephron. Ibid. 399/1 This procedure revealed myoid features in the nephric tubules. 1973Anatomical Rec. CLXXVII. 525 (heading) Myoid cells in the capsule of the adrenal gland and in monolayers derived from cultured adrenal capsules.
B. n. [perh. a different word.] A structural part of the cones and rods of the retina.
1900Lancet 7 July 7/2 The cell-body, traced from the cuticular end, begins as a distinct granular protoplasmic swelling, called the myoid. 1961S. Duke-Elder Syst. Ophthalmol. II. iii. 241 In man and other mammals the inner segment of the rod is an elongated slightly barrel-shaped structure, homogeneous in appearance, made up of two elements, an outer ellipsoid and an inner myoid. 1972Vision Res. XII. 1841 (heading) Optical function of myoids. Ibid., The myoid is a cylindrical part of the photoreceptor connecting the region of the cell containing its nucleus with the region containing the ellipsoid. |