Image: Spider silk duct

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Description: A generalized form of a spider's silk duct/ gland and spinneret. . Each differently coloured section highlights a discrete section of the gland: Section 1: the secretory or tail section of the gland. Section 2: the storage sac. This stores and maintains the gel-like unspun silk dope until it is required by the spider. Section 3: The funnel rapidly reduces the large diameter of the storage sac to the small diameter of the tapering duct. Section 4: The final length is the tapering duct, the site of most of the fiber formation. This consists of a tapering tube with several tight about turns, with a valve (5) almost at the end.
Title: Spider silk duct
Credit: Own work
Author: Vincentsarego
Usage Terms: Creative Commons Attribution 3.0
License: CC BY 3.0
License Link: http://creativecommons.org/licenses/by/3.0
Attribution Required?: Yes

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Spinneret

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