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1. a narrow extracellular cleft between the presynaptic and postsynaptic membranes. 2. synaptic trough.Medical dictionary. 2011.
synaptic cleft — noun also synaptic gap : the space between neurons at a nerve synapse across which a nerve impulse is transmitted by a neurotransmitter * * * Physiol. the small gap, measured in nanometers, between an axon terminal and any of the cell membranes… … Useful english dictionary
synaptic cleft — The narrow space between the presynaptic cell and the postsynaptic cell in a chemical synapse, across which the neurotransmitter diffuses … Dictionary of molecular biology
synaptic cleft — Physiol. the small gap, measured in nanometers, between an axon terminal and any of the cell membranes in the immediate vicinity. [1975 80] * * * … Universalium
primary synaptic cleft — synaptic trough … Medical dictionary
synaptic vesicle — n a small secretory vesicle that contains a neurotransmitter, is found inside an axon near the presynaptic membrane, and releases its contents into the synaptic cleft after fusing with the membrane … Medical dictionary
cleft — A fissure. anal c. SYN: intergluteal c.. branchial clefts a bilateral series of slitlike openings into the pharynx through which water is drawn by aquatic animals; in the walls of the clefts are the vascular gill filaments that … Medical dictionary
synaptic trough — an invagination of the membrane of a striated muscle fiber, surrounding a motor end plate at a neuromuscular junction. Called also synaptic cleft and primary synaptic cleft … Medical dictionary
synaptic vesicles — small membrane bound structures behind a presynaptic membrane, containing neurotransmitters; when depolarization occurs they fuse with the presynaptic membrane and release the neurotransmitter into the synaptic cleft. Diagram of synaptic vesicles … Medical dictionary
synaptic gap — noun see synaptic cleft … Useful english dictionary
nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… … Universalium
