up spicule in Wiktionary, the free dictionary. Spicules are any of various small needle-like anatomical structures occurring in organisms Spicule may...

Spicules are structural elements found in most sponges. The meshing of many spicules serves as the sponge's skeleton and thus it provides structural support...

In solar physics, a spicule, also known as a fibril or mottle, is a dynamic jet of plasma in the Sun's chromosphere about 300 km in diameter. They move...

nematodes, spicules, also known as copulatory spicules, are needle-like mating structures found only in males. Male nematodes may have one or two spicules which...

Spicules are tiny glass flakes which are formed during the manufacture of glass vials. A glass tube is extruded at a constant rate and a jet of water applied...

species Monorhaphis chuni, a sponge known for creating a single giant basal spicule (G.B.S.) to anchor the sponge in the sediments. The species was described...

species have silica spicules, whereas some species have calcium carbonate exoskeletons. Calcareous sponges have calcium carbonate spicules and, in some species...

are characterized by spicules made of calcium carbonate, in the form of high-magnesium calcite or aragonite. While the spicules in most species are triradiate...

are sponges with a skeleton made of four- and/or six-pointed siliceous spicules, often referred to as glass sponges. They are usually classified along...

their skeletons out of silica, which forms a unique lattice structure of spicules. The sponges are usually between 10 cm (3.9 in) and 30 cm (12 in) tall...

osteoid, which increases the size of the spicule. As the spicules continue to grow, they fuse with adjacent spicules and this results in the formation of...

made of diffuse meshworks of calcite/silica structural elements called spicules, and echinoderms have a dermal calcite endoskeleton known as ossicles....

This is a list of small shelly fossils of prehistoric marine animals, ordered by their type. Namacalathus Yochelsoniella Elements of a scleritome, resembling...

part of the body wall is a mantle (or pallium) which secretes calcareous spicules, plates or shells. It overlaps the body with enough spare room to form...

morphologically indistinguishable from Enterobius vermicularis except the spicule size. Throughout this article, the word "pinworm" refers to Enterobius...

Osteoblast Osteoblasts (purple) rimming a bony spicule (pink - on diagonal of image). In this routinely fixed and decalcified (bone mineral removed) tissue...

they differ at the spicule level. The following spicules are present in this species: Three distinct size classes of tylostyles (spicule with a point at...

ossicles in echinoderms), hydrostatically supported body cavities (most), and spicules (sponges). Cartilage is a rigid connective tissue that is found in the...

(2.4 in) wide. The surface is completely covered in outward projecting spicules which may be up to 4 mm (0.16 in) long. It has a single large oscule (4–6 mm...

Their "skeletons" are made of spicules consisting of fibers of the protein spongin, the mineral silica, or both. Where spicules of silica are present, they...

altitude, but forms a kind of nimbus around chromospheric features such as spicules and filaments, and is in constant, chaotic motion. The transition region...

long overlapping spicules arranged in parallel bundles. They radiate from a common center in continuation with the lowest spicules of the head, extending...

shell small shelly fauna scaly-foot snail shell estuary shells Sponge spicule Test Endoskeletons (bones) Vertebrate skeleton Bone mineral Ossification...

silica in the form of chert or siliceous skeletal fragments (such as sponge spicules, diatoms, or radiolarians). Fossils are also common in limestone. Limestone...

atmosphere, just above the photosphere, is the thin chromosphere region, where spicules appear and stellar flares begin. Above this is the transition region, where...

Cornwall, and in Russia, Germany and elsewhere. Sponges are known from spicules and anchor ropes, and include various forms such as the Calcispongea Cotyliscus...

colonial tunicate Catellocaula, and various Jurassic-aged and Tertiary-aged spicules tentatively attributed to ascidians.[citation needed]. Fossils of Echinodermata...

Supergranulation Granule Faculae Sunspot Ellerman bomb Chromosphere Plage Spicule Moreton wave Corona Transition region Coronal hole Coronal loop Coronal...

commonly to the hardened parts of arthropod exoskeletons and the internal spicules of invertebrates such as certain sponges and soft corals. In paleontology...

This may be calcified, forming structures such as shells, bones, and spicules. In contrast, the cells of other multicellular organisms (primarily algae...