Now class, this is what the inside of a shark’s mouth looks like…

Written on October 15, 2008 at 8:26 pm
Filed under: University with tags:

[pause] I’m glad you all liked my last entry and found it entertaining. You all found it about a hundred thousand times more funny than I did.

I’m currently studying for my vertebrate biology course. Specifically jaw suspension. For example “Amphistyly”. Do you know what that is? It is seen in primitive fish, and seen in 6-gilled sharks that are found in deep sea areas. The first two gill arches are used in the following way: the first one is connected to the skull, the other is connected to the hyomandibular. There is a looser connection. Go jaws. The next is Hyostyly (ooooooh, ahhhhhhhh), a type of jaw suspension found in most fish. The hyomandibular is braced and suppots the jaw, but this whole thing is loose and more ‘dynamic’ and BOOM: the jaw can swing forward and go ‘chomp-chomp-chomp’ on the prey.

And this was your Wednesday October 15th 2008 lesson in the jaw suspension in some sharks and fish. Join me tomorrow when I start talking about the differences in cranial kinesis. [pause] Stop that yawning, right now.

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