| 单词 | nuclear bag |
| 释义 | > as lemmasnuclear bag nuclear bag n. Physiology an aggregation of nuclei occurring in the central portion of an intrafusal muscle fibre; usually attributive, esp. in nuclear bag fibre; cf. nuclear chain n. ΚΠ 1948 Q. Jrnl. Microsc. Sci. 89 157 Each muscle-fibre possesses a non-striated nuclear bag, and to either side of the bag has the appearance of a myotube. 1962 Philos. Trans. (Royal Soc.) B. 245 82 All spindles contain two distinct types of intrafusal muscle fibre, ‘nuclear bag fibres’ and ‘nuclear chain fibres’, which differ in structure and innervation. 1980 Gray's Anat. (ed. 36) vii. 859/1 In nuclear bag fibres the equatorial nuclei are gathered together in a cluster to give a slight expansion of the fibre profile, whereas in the nuclear chain type the nuclei form a single longitudinal row in the centre of the fibre. < as lemmas |
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