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Ribbons

ribbon synapse

(Science: biology, physiology) Ultrastructurally distinct type of synapse found in a variety of sensory receptor cells such as retinal photoreceptor cells, cochlear hair cells and vestibular organ receptors, as well as in a nonsensory neuron, the retinal bipolar cell.

unlike most neurons, these cells do not use regenerative action potentials but release transmitter in response to small graded potential changes. Ribbon synapses have different exocytotic machinery from conventional synapses in containing dense bars or ribbons anchored to the presynaptic membrane covered with a layer of synaptic vesices. The ribbons have been proposed to shuttle synaptic vesicles to exocytotic sites.


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The Fiber Disease

... and biting (no ,I don't want to die, I WANT to live). We've been ignored enough, we need help!! This is IMPORTANT...pass out your flyers, tie your ribbons around paper, put posters on walls and churches. But DO it, don't talk about it...a billboard is a good idea too...so is yours...and we ARE ...

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by reliefseeker
Tue Nov 21, 2006 2:43 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5488980

The Fiber Disease

... solid conglomerates of minute particles, long threads and shorter ribbon-like structures. Most of the solid structures are black, whereas the ribbons and threads can show a wide diversity of colors including blue, yellow, green, brown, red or are translucent. While their compositions are still ...

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by RANDY
Mon Jan 23, 2006 2:10 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5488980


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