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Exploring the Unique Anatomy and Function of Sea Stars in Phylum Echinodermata

This article delves into the fascinating anatomy and mechanisms of sea stars, highlighting their intricate oral and aboral surfaces. Discover the role of oral spines and ambulacral grooves, and how tube feet function like suction cups for locomotion and prey capture. Learn about the water vascular system that controls tube feet movement, the characteristics of the phylum Echinodermata, including radial symmetry and calcium-based endoskeletons, as well as the unique two-part stomach that facilitates extracellular digestion.

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Exploring the Unique Anatomy and Function of Sea Stars in Phylum Echinodermata

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Presentation Transcript

  1. NAME THE STRUCTURE

  2. MOUTH

  3. IS THIS THE ORAL OR ABORAL SURFACE OF THE SEA STAR?

  4. ORAL

  5. NAME THE SPINY STRUCTURES

  6. ORAL SPINES

  7. WHAT IS THEIR FUNCTION

  8. FOOD PROCUREMENT

  9. NAME THE STRUCTURE

  10. AMBULACRAL GROOVE

  11. WHAT IS IN THE AMBULACRAL GROOVES?

  12. TUBE FEET

  13. WHAT IS THEIR FUNCTION?

  14. LOCOMOTION AND HOLDING ON TO PREY

  15. HOW DO THE TUBE FEET WORK?

  16. LIKE SUCTION CUPS

  17. WHAT CONTROLS THE TUBE FEET?

  18. THE WATER VASCULAR SYSTEM THAT MOVES WATER INTO OR OUT OF THE TUBE FEET

  19. NAME THE SPINY STRUCTURES

  20. SPINES

  21. NAME THESE STRUCTURES

  22. ARMS OR RAYS

  23. NAME THE PHYLUM

  24. PHYLUM ECHINODERMATA

  25. NAME CHARACTERISTICS OF PHYLUM ECHINODERMATA

  26. RADIAL SYMMETRY IN ADULT SPINY-SKINNED USUALLY TUBE FEET AND PEDICELLARIAE PENTAMOROUS DEUTEROSTOME CALCIUM-BASED ENDOSKELETON FORMED OF INDIVIDUAL UNITS CALLED OSSICLES

  27. HOW IS THE SEA STAR’S DIGESTIVE SYSTEM UNIQUE?

  28. TWO-PART STOMACH: EXTRACELLULAR DIGESTION

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