Aboral madreporite

Definition

The aboral madreporite is a sievelike structure found on the aboral (opposite the mouth) surface of echinoderms, such as sea stars. It functions in filtering water into the water vascular system, which is crucial for locomotion and feeding.

5 Must Know Facts For Your Next Test

1. The aboral madreporite is part of the water vascular system in echinoderms.
2. It helps regulate water pressure within the system by filtering seawater.
3. Located on the opposite side of the mouth, it is easily distinguishable from oral structures.
4. Plays an essential role in enabling movement and capturing food through tube feet.
5. Any damage to the aboral madreporite can impair an echinoderm's ability to move and feed effectively.

Review Questions

Related terms

Water Vascular System: A network of hydraulic canals unique to echinoderms that aids in locomotion, feeding, and gas exchange.

Tube Feet: Small, flexible appendages operated by hydraulic pressure within the water vascular system, used for movement and capturing prey.

Echinoderms:

A phylum of marine animals characterized by radial symmetry, a calcareous skeleton, and a water vascular system.