Definition of Madreporite. Meaning of Madreporite. Synonyms of Madreporite

- The madreporite /ˌmædrɪˈpɔːraɪt/ is a light colored calcareous opening used to filter water into the water vascular system of echinoderms. It acts like...
- sieve-like structure on the upper surface of the animal, called the madreporite. This overlies a small sac, or ampulla, connected to a duct termed the...
- central one is the **** ("periproct"). The biggest genital plate is the madreporite. The mouth lies in the centre of the oral surface in regular urchins...
- opens to the exterior through a sieve-like madreporite on the aboral (upper) surface of the animal. The madreporite is linked to a slender duct, the stone...
- covering of the aboral surface. Some are specialised structures such as the madreporite (the entrance to the water vascular system), pedicellariae and paxillae...
- normally accompanied by the appearance of additional madreporites. The presence of multiple madreporites seems to be a prerequisite of fission. In Brazil...
- vascular system of holot****ans is similar to other echinoderms, except the madreporite opens in the perivisceral coelom instead of in the external body wall...
- generally has one madreporite. Others, such as certain Euryalina, have one per arm on the aboral surface. Still other forms have no madreporite at all. Suckers...
- rarely gets larger than 12 cm. As with all seastars the blood star has a madreporite which can be seen in the image below. ****es are dioecious and females...
- set of five jaws. The animals apparently did not have an ****, but a madreporite was on the upper surface, surrounded by what appear to be genital pores...