YES, but it is not the same "ossicles" that are found in the mammal ear.
Echinoderm ossicles are small calcium-matrix plates that make up the dermis or endoskeleton of the echinoderm. They provide protection and support to the underlying tissue.
Ossicles
Ossicles
Ossicles
Brittle stars are echinoderms with a skeleton of embedded calcite ossicles (little bones) which fuse to form an armor plate. The plates are covered by the epidermis, so that you can tell where the plates/ossicles are, but you cannot see them directly.
In echinoderms, such as starfish, an ossicle is a bony plate providing structure and protection. It is covered by an epidermis and considered part of the hard endoskeleton where the bony (calcite) plates (ossicles) are connected by collagen fibers.
Yes, they , like other echinoderms have mesodermal endoskeletons made up of calcareous ossicles, (bony plates).
Echinoderms, such as sea stars and sea urchins, have an endoskeleton made of hard plates called ossicles that lie inside their bodies. Although this endoskeleton is internal, it functions similarly to an exoskeleton by providing support and protection. It allows echinoderms to control their body shape and movement, just like an exoskeleton does for other invertebrates.
Echinoderms are characterized by their radial symmetry, typically exhibiting a five-part body plan in adults. They possess a unique water vascular system that aids in locomotion and feeding through tube feet. Echinoderms also have a calcareous endoskeleton made of ossicles, which provides structural support and protection. Additionally, they are known for their regenerative abilities, allowing them to regrow lost body parts.
In echinoderms, the test refers to the hard calcium carbonate skeleton that provides structure and support to the organism. It is composed of plates called ossicles, which are often covered by a thin layer of skin. The test is a defining characteristic of echinoderms and contributes to their ability to withstand pressure in their marine habitats.
The bony plates that make up a starfish's skeleton is the ossicles. They are found in not only starfish but sea cucumbers and sea urchins also.
Star fish are a 'echinoderms' (which, from the Greek, means "spiny skin"). The skin encloses the animals skeleton which is composed of calcareous plates or ossicles through and over which the skin grows. This means that thy are hard to the touch.
Echinoderms are in the Animalia kingdom.