ambulacral area वाक्य
उदाहरण वाक्य
मोबाइल
- Five, or less commonly three, ambulacral areas ran along the outside of the body, radiating outwards from the mouth.
- A number of small tentacles either surrounded the mouth, or projected outwards in a row from the ambulacral areas, depending on species.
- In some species, the ambulacral areas can no longer be distinguished, with tube feet spread over a much wider area of the body.
- The radial canals run through notches in the calcareous plates surrounding the mouth and then run along the ambulacral areas along the length of the body.
- A central haemal ring surrounds the pharynx next to the ring canal of the water vascular system, and sends off additional vessels along the radial canals beneath the ambulacral areas.
- If a sea urchin is overturned, it can extend its tube feet in one ambulacral area far enough to bring them within reach of the substrate and then successively attach feet from the adjoining area until it is righted.
- Those of the order Apodida have no tube feet or ambulacral areas at all, and burrow through sediment with muscular contractions of their body similar to that of worms, however five radial lines are generally still obvious along their body.
- The upper surface, or " tegmen ", is divided into five " ambulacral areas ", including a deep groove from which the tube feet project, and five " interambulacral areas " between them.
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