Dictionary » S » Spicules



A small, slender, sharp-pointed piece, usually on a surface, a small spike of flowers.

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Avian and ratite medullary bone

... calcium for producing eggshell, and have no biomechanical function. Bird medullary tissue is a very brittle and fragile type of bone that the spicules of medullary bone easily separated from the originating layer, but why the thin basal layer remains attached to the cortex? Did it have any ...

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by munyit
Mon Apr 02, 2012 4:43 am
Forum: Physiology
Topic: Avian and ratite medullary bone
Replies: 0
Views: 2060

Re: Phyla Porifera and Cnidaria

... of the type of parastism they engage in. What mechanism do sponges adapt to protect itself from suspecting predators? Sponges use silicious spicules as a physical defense mechanism and secondary metabolites as chemical defense. By which means do Cnidarians seize and consumer faster organisms? ...

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by firechild
Tue Feb 02, 2010 1:23 am
Forum: Zoology Discussion
Topic: Phyla Porifera and Cnidaria
Replies: 3
Views: 15132

Phyla Porifera and Cnidaria

... asexually, im really not sure... The body forms of the sponge that are on display are the epidermis (pinacoycte), ostium, osculum, and the spicules. is this statement true?

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by purplec16
Tue Feb 02, 2010 12:32 am
Forum: Zoology Discussion
Topic: Phyla Porifera and Cnidaria
Replies: 3
Views: 15132

The Fiber Disease

... or TW183 http://www.papakyriazis.gr/twiny/TWINYHTML/pages/TW183.html Next: Spicules Small, hard bodies of silica or calcium carbonate that serve as the skeletal elements in sponges. Nudibranch Shell-less marine snails. "Sponges ...

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by Skytroll
Sat Jul 22, 2006 6:16 pm
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6245039

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