| 释义 |
afferent, a.|ˈæfərənt|
[ad. L. afferent-em pr. pple. of affer-re to bring to; f. af- = ad- to + ferre to bear.]
Bringing or conducting inwards or towards. Chiefly in Phys. as afferent nerves, vessels.
1839–47Todd Cycl. Anat. & Phys. III. 646/2 The former are called efferent, the latter afferent fibres. 1845Todd & Bowman Phys. Anat. II. 274 These vessels being styled afferent as they enter the gland, and efferent as they leave it. 1860H. Spencer in Macm. Mag. I. 395 An impression on the end of an afferent nerve is conveyed to some ganglionic centre, and is thence usually reflected along an efferent nerve to one or more muscles which it causes to contract. 1870Rolleston Anim. Life 52 One of the afferent pulmonary veins.
Add:B. absol. as n. Anat. and Physiol. An afferent structure, such as a nerve or vessel.
1927W. Keiller Nerve Tracts Brain & Cord iii. 315 Afferents to the vermis also come from the optic and auditory nerves. 1951Jrnl. Physiol. CXIII. 450 The carotid sinus nerve is a mixed afferent nerve containing afferents from the baroreceptors of the carotid sinus. 1990Brain CXIII. 531 The capacity of peripheral somatosensory afferents to modulate or even to generate burst discharges of striatal neurons seemed to be negligibly small.
Hence ˈafferently adv., in an afferent direction; involving afferent structures.
1961in Webster. 1969J. S. Bruner in Beyond Information Given (1974) xv. 271 The play of attention alters in time from being afferently dominated to being efferently relevant. 1991Clin. & Exper. Immunol. LXXXIV. 383 In transfer experiments, the function of afferently acting suppressor cells was blocked by local treatment with Z7557 or systemic CY. |