The soft interior tissue of an organ or animal structure; esp. the spongy core of a feather-shaft or the core of a horn.
| 单词 | θ26655 |
| 释义 | the world > life > the body > hair > parts of hair > [noun] (8) pithOE The soft interior tissue of an organ or animal structure; esp. the spongy core of a feather-shaft or the core of a horn. root end1675 In extended use: the end of a hair, nail, etc., nearer to the root; the extremity of a root of a tooth. shaft1748 A stem, columnar or straight portion of something. In various Natural History uses. (a) The main stem or scape of a feather. (b) The part of a… medulla1826 Anatomy and Zoology. The innermost of the three layers of a mammalian hair. Also: the mesodermal tissue that occupies the shaft of a growing feather. stem1845 Applied to various objects resembling the stem of a plant or of a flower, etc. (Cf. stalk, n.1 4 5.) The shaft, n.2 of a hair, of a feather. Henle's layer1850 In the genitive and with of, designating structures described by the German anatomist F. G. J. Henle. †(a) (in full fenestrated layer of Henle) the… Henle's sheath1853 In the genitive and with of, designating structures described by the German anatomist F. G. J. Henle. †(a) the outer layer of the inner root sheath… epicuticle1949 A thin outer membrane surrounding a wool fibre or animal hair. Cf. exocuticle, n. b, endocuticle, n. b. |
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