| 释义 |
postsyˈnaptic, a.
1. Cytology. [post- B. 1 b.] Subsequent to meiotic synapsis.
1909[see presynaptic a. 1]. 1912Jrnl. Exper. Zool. XIII. 377 (heading) The post-synaptic spireme. Pachytene and diplotene. 1921Ann. Bot. XXXV. 366 During the period when the mother-cells are in synapsis and the postsynaptic spireme stages, the tapetal cells vary greatly in appearance. 1931Cytologia II. 353 Secondary association..is a post-synaptic phenomenon.
2. Physiol. [post- B. 2.] Of, pertaining to, or designating a neurone that receives a nerve impulse at a synapse. Opp. presynaptic a. 2.
1937,1965[see presynaptic a. 2]. 1974M. C. Gerald Pharmacol. v. 100 This interaction may produce one of two types of changes in the permeability of the postsynaptic membrane.
Hence postsyˈnaptically adv.
1952Jrnl. Physiol. CXVII. 115 The fact that a moderate dose of curarine abolishes ‘external’ as well as ‘internal’ miniature potentials, strongly indicates that they both arise ‘post-synaptically’, in the end-plate. 1973Nature 8 June 355/1 Lead can only block postsynaptically in conditions in which the density of ACh-receptor complexes is much lower than it is during an end-plate potential. 1978Ibid. 22 June 674/1 These neurones lie postsynaptically to high densities of nerve terminals shown by immuno⁓histochemical techniques to contain somatostatin-like material. |