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Madreporite. Close up of a madreporite. The madreporite / ˌmædrɪˈpɔːraɪt / [1] is a light colored calcareous opening used to filter water into the water vascular system of echinoderms. It acts like a pressure-equalizing valve.
Jan 27, 2020 · The madreporite is a plate of calcium carbonate with pores that controls water flow in echinoderms. Learn how it works, where to find it and which animals have it.
Oct 31, 2023 · The madreporite is a light-colored, calcerous opening used to filter water into the water vascular system of echinoderms. Acting as a pressure-equalizing valve, it is visible as a small red or yellow button-like structure (similar to a small wart) on the aboral surface of the central disk of a sea star.
Madreporite is a porous, button-shaped plate that allows water or fluid to enter or exit the body of echinoderms, such as sea urchins and starfish. Learn more about the water-vascular system of echinoderms and the types of shellfish that belong to this group.
Aug 24, 2022 · The small white structure, slightly off center to the left is the sieve plate or madreporite. This structure is the exterior opening to the water-vascular system of the sea star. “Aboral view, sea star, 2019” by Jason Charbonneau [CC by 4.0]
The madreporite is one of the most enigmatic organs of the echinoderms. It connects the internal cavity of the water-vascular system to the external seawater through its many pores which are lined with ciliated epithelium.
The madreporite is a sieve-like, calcareous structure found in echinoderms. It functions as the entry point for water into the water vascular system, crucial for locomotion and feeding.
