Echinoderms possess a unique water vascular or ambulacral ( appendages such as " tube feet ") system.

In the crinoids, the tube feet waft food particles captured on the radial limbs towards the central mouth ; in the asteroids, the same wafting motion is employed to move the animal across the ground.

Some burrowing sea stars poke their tube feet through the surface of the sand or mud above them into the water column and use them to attain oxygen from the water column.

Exchange of gases also takes place through tube feet.

Once a particle touches the arms of the creature, the tube feet act to swish it to the central mouth of the crinoid, where it is ingested, nutrients removed, and the remains egested through its anus to the underlying water column.

Other toothless breeds devour smaller organisms, which they may catch with their tube feet, whole.

The latter are seized and held by the tube feet ; sea stars then stiffen their legs, expanding the shell.

Defensive strategies employed include the presence of spines, toxins, which can be inherent or delivered through the tube feet, and the discharge of sticky entangling threads by sea cucumbers.

Like other echinoderms, they have fivefold symmetry ( called pentamerism ) and move by means of hundreds of tiny, transparent, adhesive " tube feet ".

Although many sea cucumbers have branched tentacles surrounding the oral opening, these have originated from modified tube feet and are not homologous to the arms of the crinoids, sea stars, and brittle stars.

In these urchins, the upper surface of the body is slightly domed, but the underside is flat, while the sides are devoid of tube feet.

Urchins have tube feet, which arise from the five ambulacral areas.

This water vascular system works through hydrolic pressure, allowing the Sea Urchin to pump water into and out of the tube feet, enabling it to locomote.

This area, called the peristome, also includes five pairs of modified tube feet and, in many species, five pairs of gills.

The coelomocytes are an essential part of blood clotting, but also collect waste products and actively remove them from the body through the gills and tube feet.

From the nerve ring, five nerves radiate underneath the radial canals of the water vascular system, and branch into numerous finer nerves to innervate the tube feet, spines, and pedicellariae.

Sea urchins have no visible eyes, legs, or means of propulsion, but can move freely over hard surfaces using adhesive tube feet, working in conjunction with the spines.

Image: Zeeegel3. jpg | Sea urchin test-each white band is the location of a row of tube feet ; each pair of white bands is called an ambulacrum.

Image: Seeigel-Saugfuesse ( Galicien2005 ). jpg | Sea urchins have adhesive tube feet.

The facility is 1 million square feet in area and will produce tube goods to service natural gas exploration in the Marcellus Formation, which is the largest gas field discovered in the past decade, estimated to provide enough natural gas to supply the United States for 100 years.

The two outer funnels, which were six feet and eight inches long, were made of paper and connected to a tube inserted in each ear.

Starfish have tube feet operated by a hydraulic system and a mouth at the centre of the oral or lower surface.

The tube feet extend through notches in these and are connected internally to the water vascular system.

This system has many projections called tube feet on the starfish's arms which function in locomotion and aid with feeding.

It crawls very slowly over the sea bottom using its spines as stilts, with the help of its tube feet.

Scattered among its spines are rows of tiny tube feet with suckers that help it to move and stick to the sea floor.

In the case of the tapering worm tubes Selkirkia, trilobites are always found with their heads directed towards the opening of the tube, suggesting that they reversed in ; the absence of any moulted carapaces suggests that moulting was not their primary reason for seeking shelter.

The stamens are usually found around the style, either aggregated densely or fused into a tube, probably an adaptation in association with the plunger ( brush ; or secondary ) pollination that is common among the families of the order, wherein pollen is collected and stored on the length of the pistil.

In 1857, German physicist and glassblower Heinrich Geissler sucked even more air out with an improved pump, to a pressure of around 10 < sup >− 3 </ sup > atm and found that, instead of an arc, the glow filled the tube.

Crookes found that as he pumped more air out of the tubes, the Faraday dark space spread down the tube from the cathode toward the anode, until the tube was totally dark.

Two torpedo tube mountings ( later on, multiple mountings ) were generally found amidships.

The fundamental frequency of a sound wave in a tube with a single CLOSED end can be found using the following equation:

The fundamental frequency of a sound wave in a tube with either BOTH ends OPEN or CLOSED can be found using the following equation:

It was also later found that, with minor circuit modification, the nuvistor made a sufficient replacement for the obsolete Telefunken VF14 tube, used in the famed Neumann U 47 studio microphone.

‪ File: Evangelista Torricelli2. jpg ‬| Evangelista Torricelli ( 1608-1647 ): invented the barometer ‬‬ ( a glass tube of mercury inverted into a dish ), found that the change of height of the mercury each day was from atmospheric pressure, worked in geometry and developed integral calculus, published findings on fluid and projectile motion in his 1644 Opera Geometrica ( Geometric Works )‬‬‬

In Ghostbusters II, the " river of slime " under New York city is found by the Ghostbusters boys to be flowing through an old pneumatic tube line – a reference to the Beach Pneumatic Transit tube.

In addition, in 2007 the U. S. Food and Drug Administration ( FDA ) approved an endotracheal breathing tube with a fine coat of silver for use in mechanical ventilation, after studies found it reduced the risk of ventilator-associated pneumonia.

Prof. Branly further found that when the filings had once cohered, they retained their low resistance until shaken apart, for instance, by tapping on the tube.

This was first demonstrated by J. J. Thomson in 1897 when, using a cathode ray tube, he found that an electrical charge would travel across a vacuum ( which would possess infinite resistance in classical theory ).

Their gut is a straight, undifferentiated tube, which in some fossils is found to be filled with sediment.

A technological solution was found: Sullivan used a glass tube baton containing a platinum wire that glowed a dull red.

* Malagasy cultural traditions shared with Austronesians of Taiwan, the Pacific Islands, Indonesia, New Zealand, and the Philippines including ancient customs, such as burying the dead within a canoe in the sea or in a lake, the cultivation of traditional Austronesian crops such as taro orsaonjo, banana, coconut, and sugar cane, traditional architecture with a square house plan, music and musical instruments such as the Antsiva conch, the hazolahy drum, the atranatrana xylophone, sodina flute, or the valiha tube zither, and dance, including the " bird dance " found both in central and southern regions.

# Glutinant: a sticky surface used to stick to prey, referred to as ptychocysts and found on burrowing ( tube ) anemones, which help create the tube in which the animal lives

He found that the discharge caused a fluorescent glow to form on the glass walls of the vacuum tube, and that the glow could be made to shift by applying an electromagnet to the tube, thus creating a magnetic field.

Other animals may have organs that are analogous to tongues, such as a butterfly's proboscis or a radula on a mollusc, but these are not homologous with the tongues found in vertebrates, and often have little resemblance in function, for example, butterflies do not lick with their proboscides ; they suck thorough them, and the proboscis is not a single organ, but two jaws held together to form a tube.

* 10th century-The first reference to an " observation tube " is found in the work of Al-Battani ( Albatenius ) ( 853-929 ).

Wart can be found in every tube while being in Subspace, where his room are similar to that of the prequel's last level, Mario must fight him.