Tag Archives | Asterias

Structures of Water Vascular System in Asterias

The following points highlight the eight different structures of water vascular system in Asterias. The structures are: 1. Madreporite 2. Stone Canal 3. Ring Canal 4. Polian Vesicles 5. Tiedmann's Bodies 6. Radial Canals 7. Lateral or Podial Canals 8. Tube-Feet (Podia) and Ampulla. Structure # 1. Madreporite: The water vascular system starts with the madreporite and gives off a [...]

By Khusboo Jain|2016-05-27T11:32:20+00:00May 27, 2016|Phylum Echinodermata|Comments Off

Asterias: An Example of Phylum Echinodermata

In this article we will discuss about Asterias:- 1. Habit and Habitat of Asterias 2. External Structures of Asterias 3. Structure of Body Wall 4. Coelom 5. Digestive System 6. Respiratory System 7. Locomotion 8. Circulatory System 9. Excretory System 10. Nervous System 11. Reproductive System 12. Development. Contents: Habit and Habitat of Asterias External Structures of Asterias Structure of [...]

By Khusboo Jain|2016-05-27T11:31:33+00:00May 27, 2016|Phylum Echinodermata|Comments Off