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12/14/2008 04:45:54 PM · #1 |
| No matter where you live you're sure to find rocks, stones or pebbles. Photograph them in an interesting and creative way. |
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12/14/2008 05:18:47 PM · #2 |
I guess then that these would be some good examples...
  
 
Hmmm, the only thing in my gallery that might fit the bill for the description is this stone wisdom ring...but then it might fit the Asian challenge suggestion better:-)
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12/14/2008 05:24:10 PM · #3 |
Lots of possibilities...
I'm for it
Message edited by author 2008-12-14 17:24:33. |
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12/14/2008 06:00:43 PM · #4 |
I have rocks in my head....does that count????????
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12/14/2008 06:46:48 PM · #5 |
Originally posted by Judi:
I have rocks in my head....does that count???????? |
Actually, you do -- otoliths. Interestingly, without those "rocks in your head" you would be literally unbalanced.
In case you can't read the link without registering ...
Originally posted by Medscape:
Introduction
The peripheral vestibular system is an integral part of the labyrinth that lies in the otic capsule in the petrous portion of the temporal bone.
The vestibular system, which is the system of balance, consists of 5 distinct end organs: 3 semicircular canals that are sensitive to angular accelerations (head rotations) and 2 otolith organs that are sensitive to linear (or straight-line) accelerations.
The semicircular canals are arranged as a set of 3 mutually orthogonal sensors; that is, each canal is at a right angle to the other 2. This is similar to the way 3 sides of a box meet at each corner and are at a right angle to one another. Furthermore, each canal is maximally sensitive to rotations that lie in the plane of the canal. The result of this arrangement is that 3 canals can uniquely specify the direction and amplitude of any arbitrary head rotation. The canals are organized into functional pairs wherein both members of the pair lie in the same plane. Any rotation in that plane is excitatory to one of the members of the pair and inhibitory to the other.
The otolith organs include the utricle and the saccule. The utricle senses motion in the horizontal plane (eg, forward-backward movement, left-right movement, combination thereof). The saccule senses motions in the sagittal plane (eg, up-down movement). |
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12/14/2008 07:29:12 PM · #6 |
Originally posted by GeneralE:
Originally posted by Judi:
I have rocks in my head....does that count???????? |
Actually, you do -- otoliths. Interestingly, without those "rocks in your head" you would be literally unbalanced.
In case you can't read the link without registering ...
Originally posted by Medscape:
Introduction
The peripheral vestibular system is an integral part of the labyrinth that lies in the otic capsule in the petrous portion of the temporal bone.
The vestibular system, which is the system of balance, consists of 5 distinct end organs: 3 semicircular canals that are sensitive to angular accelerations (head rotations) and 2 otolith organs that are sensitive to linear (or straight-line) accelerations.
The semicircular canals are arranged as a set of 3 mutually orthogonal sensors; that is, each canal is at a right angle to the other 2. This is similar to the way 3 sides of a box meet at each corner and are at a right angle to one another. Furthermore, each canal is maximally sensitive to rotations that lie in the plane of the canal. The result of this arrangement is that 3 canals can uniquely specify the direction and amplitude of any arbitrary head rotation. The canals are organized into functional pairs wherein both members of the pair lie in the same plane. Any rotation in that plane is excitatory to one of the members of the pair and inhibitory to the other.
The otolith organs include the utricle and the saccule. The utricle senses motion in the horizontal plane (eg, forward-backward movement, left-right movement, combination thereof). The saccule senses motions in the sagittal plane (eg, up-down movement). |
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Ahhhh...yeahhhhhhhhhhhhhhhhhhh!!!! Thanks General! LOL!
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12/14/2008 07:41:37 PM · #7 |
here is one of my oldies
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12/14/2008 09:01:16 PM · #8 |
| Great suggestion - now to get to Ayers Rock on the week it's announced! |
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06/03/2009 09:33:25 AM · #9 |
| Yay, it got picked! I might shoot for this one. |
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