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The first step in the process is the formation of bone spicules which eventually fuse with each other and become trabeculae. The periosteum is formed and bone growth continues at the surface of trabeculae. Much like spicules, the increasing growth of trabeculae result in interconnection and this network is called woven bone.
Inside of a bone showing the trabecular structure A typical carcinoid tumor of the lung showing a trabecular pattern of elongated groups of cells.. A trabecula (pl.: trabeculae, from Latin for 'small beam') is a small, often microscopic, tissue element in the form of a small beam, strut or rod that supports or anchors a framework of parts within a body or organ.
The meshing of many spicules serves as the sponge's skeleton and thus it provides structural support and potentially defense against predators. [1] Sponge spicules are made of calcium carbonate or silica. Large spicules visible to the naked eye are referred to as megascleres or macroscleres, while smaller, microscopic ones are termed microscleres.
While the spicules in most species are triradiate (with three points in a single plane), some species may possess two- or four-pointed spicules. [4] [5] Unlike other sponges, calcareans lack microscleres, tiny spicules which reinforce the flesh. In addition, their spicules develop from the outside-in, mineralizing within a hollow organic sheath ...
There are five principal architectures of arachnoid trabeculae structures, whose shapes may be described as single strands, branched strands, tree-like shapes, sheets, and trabecular networks. [7] Some authors describe the structures in the subarachnoid space as having three forms, namely "trabeculae", "septa" and "pillars". [8] [9] [10] [11]
Image source: Getty Images. The 10 states where Social Security checks cover the most. To determine how far Social Security goes in each state, I compared the average annual benefit in each state ...
The first two episodes of Marvel’s “Daredevil: Born Again” have been unveiled to members of the press, and the first reactions for the Disney+ series are glowing. Screen Rant on-camera ...
Bolosoma stalked glass sponge. Hexactinellid sponges 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 with other sponges in the phylum Porifera, but some researchers consider them sufficiently distinct to deserve their own phylum, Symplasma.