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Why is the lever system constructed by the ear ossicles sometimes compared with a hydraulic press?
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What bony plates make up starfish skeleton?
It is the ossicles :)
What is fusion of the ossicles?
Fusion or fixation of the ossicles is where one or more of the three auditory ossicles cannot transmit sound vibrations for a variety of reasons. This does cause "conduction" deafness or hearing loss.
What are ambulacral ossicles?
In a starfish, the ambulacral ossicles are little calcified bony plates covering the radial canal.
Do echinoderms have ossicles?
YES, but it is not the same "ossicles" that are found in the mammal ear. Echinoderm ossicles are small calcium-matrix plates that make up the dermis or endoskeleton of the echinoderm. They provide protection and support to the underlying tissue.
What calcium - rich formation builds the internal skeleton of echinoderms?
Ossicles
How is hearing loss related to the ossicles?
If there is a change to the basic structure or functioning ability of your auditory ossicles, this would result in Conductive Deafness as the ossicles will not be able to transmit and amplify the sound vibrations from the tympanic membrane to the oval window.
Does the sea cucumber have only a few ossicles?
The word "ossicle" means "little bone" The sea cucumber has calcified structures just under the skin which are called microscopic ossicles or sclerietes. There are many of these ossicles which are remnants of a previous endoskeleton.
Skeletal plates in starfish?
They make up the skeleton and protect internal structures.
What can be caused by the fracture of one or more of the auditory ossicles?
One cause of "Conductive Hearing Loss" can be due to the trauma and subsequent fracture of one or more ossicles, as well as the fracture of the temporal bone which houses the middle ear with its ossicles. Conductive deafness is due to the inability of the ossicles to conduct the sound vibrations from the tympanic membrane to the oval window.
Are brittle stars ossicles apparent?
Brittle stars are echinoderms with a skeleton of embedded calcite ossicles (little bones) which fuse to form an armor plate. The plates are covered by the epidermis, so that you can tell where the plates/ossicles are, but you cannot see them directly.
How many bones in Auditory Ossicles?
3
Osteosclerosis is a condition involving what?
auditory ossicles
