polypide การใช้

• When not feeding, the lophophore retracts into the polypide through the tentacular sheath.
• These spines make it difficult for the nudibranchs to access the polypide of the zooid.
• More complex waste products are not excreted but accumulate in the polypide, which degenerates after a few weeks.
• The internal, living portion of the zooid is known as the polypide, whose walls are formed by the outer epidermis and inner peritoneum.
• Some of the old polypide is recycled, but much of it remains as a large mass of dying cells containing accumulated wastes, and this is compressed into a " brown body ".
• When the degeneration is complete, the cystid ( outer part of the animal ) produces a new polypide, and the brown body remains in the coelom, or in the stomach of the new polypide and is expelled next time the animal defecates.
• When the degeneration is complete, the cystid ( outer part of the animal ) produces a new polypide, and the brown body remains in the coelom, or in the stomach of the new polypide and is expelled next time the animal defecates.
• The lophophore and mouth are mounted on a flexible tube, called the " invert " because it can be turned inside-out and withdrawn into the polypide, rather like the finger of a rubber glove; in this position the lophophore lies inside the invert and is folded like the spokes of an umbrella.