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%ما هو (من)٪ 1 - تعريف
Synaptic Pharmacology
Ribbon synapse
TYPE OF SYNAPSE CHARACTERIZED BY AN ELECTRON-DENSE RIBBON, LAMELLA (BAR) OR SPHERICAL BODY IN THE PRESYNAPTIC PROCESS CYTOPLASM.
Ribbon synapses; Presynaptic dense body; Synaptic ribbon
The ribbon synapse is a type of neuronal synapse characterized by the presence of an electron-dense structure, the synaptic ribbon, that holds vesicles close to the active zone. It is characterized by a tight vesicle-calcium channel coupling that promotes rapid neurotransmitter release and sustained signal transmission.
red ribbon
![Actor [[Jason Priestley]] wearing a red awareness ribbon at the 1992 [[Emmy Awards]]](https://commons.wikimedia.org/wiki/Special:FilePath/Jason Priestley at the 44th Emmy Awards.jpg?width=200 "Actor [[Jason Priestley]] wearing a red awareness ribbon at the 1992 [[Emmy Awards]]")
![A large red ribbon hangs between columns in the north portico of the [[White House]] for [[World AIDS Day]], November 30, 2007.](https://commons.wikimedia.org/wiki/Special:FilePath/WHredribbonNorthPortico.jpg?width=200 "A large red ribbon hangs between columns in the north portico of the [[White House]] for [[World AIDS Day]], November 30, 2007.")
SYMBOL OF THE FIGHT AGAINST HIV/AIDS
Red Ribbon; Red ribbon (award); Red ribbon (HIV/AIDS)
¦ noun
1. US an award for coming second in a competition.
2. Canadian an award for coming first in a competition.
Medal ribbon
 Deputy Commanding General, 88th Regional Support Command Fort McCoy, WI 160601-A-UY332-639 (cropped).jpg?width=200)
MILITARY DECORATION
Ribbon bars; Service ribbon; Ribbon rack; Ribbon bar; Service ribbons; Service Ribbon
A medal ribbon, service ribbon or ribbon bar is a small ribbon, mounted on a small metal bar equipped with an attaching device, which is generally issued for wear in place of a medal when it is not appropriate to wear the actual medal.U.
ويكيبيديا
Synaptic pharmacology
Synaptic pharmacology is the study of drugs that act on the synapses. It deals with the composition, uses, and effects of drugs that may enhance (receptor) or diminish (blocker) activity at the synapse, which is the junction across which a nerve impulse passes from an axon terminal to a neuron, muscle cell, or gland cell.
A partial list of pharmacological agents that act at synapses follows.
