11. When the ciliary muscle contracts, it opens the trabecular meshwork through increased tension on the scleral spur. 12. The implant is inserted through the trabecular meshwork , thus bypassing resistance of aqueous flow through the tissue. 13. The regions where there are few cells within the meshwork are known as " lymph sinus ". 14. Keratins are the intermediate filament proteins that form a dense meshwork of filaments throughout the cytoplasm of epithelial cells. 15. During development, the majority of the heart muscle is a sponge-like meshwork of interwoven myocardial fibers. 16. As its name suggests, argon laser trabeculoplasty uses an argon laser to create tiny burns on the trabecular meshwork . 17. MYOC mutations, which cause myocilin to accumulate in the cells of the trabecular meshwork are a common cause of glaucoma. 18. A newer type of laser trabeculoplasty uses a " cold " ( nonthermal ) laser to stimulate drainage in the trabecular meshwork . 19. It is expressed in the trabecular meshwork and optic nerve head and may have a role in the development and normal function. 20. MYOC contains a signal sequence for secretion, and is secreted into the aqueous humor of the eye by the trabecular meshwork .