Definition, Betydelse & Synonymer | Engelska ordet SYNAPSE

Definition av SYNAPSE

1. synaps

Exempel på hur man kan använda SYNAPSE i en mening

• A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a synapse.
• Synaptic plasticity, the property of a neuron or synapse to change its internal parameters in response to its history.
• At a chemical synapse, one neuron releases neurotransmitter molecules into a small space (the synaptic cleft) that is adjacent to another neuron.
• Axons from upper motor neurons synapse onto interneurons in the spinal cord and occasionally directly onto lower motor neurons.
• Reuptake is necessary for normal synaptic physiology because it allows for the recycling of neurotransmitters and regulates the level of neurotransmitter present in the synapse, thereby controlling how long a signal resulting from neurotransmitter release lasts.
• Dale and others believed that signaling at the synapse was chemical, while John Carew Eccles and others believed that the synapse was electrical.
• A dendritic spine (or spine) is a small membrane protrusion from a neuron's dendrite that typically receives input from a single axon at the synapse.
• This can result in a signal that runs along the axon (see action potential) and is passed along at a synapse to another neuron and possibly on to a neural network.
• The signal is then transferred across the synapse to a motor neuron, which evokes a target response.
• The synapse is formed at a narrow gap between the pre- and postsynaptic neurons known as a gap junction.
• Activation of photopigments by light sends a signal by hyperpolarizing the rod cell, leading to the rod cell not sending its neurotransmitter, which leads to the bipolar cell then releasing its transmitter at the bipolar-ganglion synapse and exciting the synapse.
• In neuroscience, a silent synapse is an excitatory glutamatergic synapse whose postsynaptic membrane contains NMDA-type glutamate receptors but no AMPA-type glutamate receptors.
• An excitatory synapse is a synapse in which an action potential in a presynaptic neuron increases the probability of an action potential occurring in a postsynaptic cell.
• In 1888, in Spain, Santiago Ramón y Cajal, having used the Italian scientist Camillo Golgi's technique for staining nerve cells, published his discovery of the nerve synapse, which in 1889 finally gained acceptance and won Ramón y Cajal recognition as a, alongside Golgi – many say, the – "founder of modern neuroscience".
• Once the axons pass through the cribriform plate, they terminate and synapse with the dendrites of mitral cells in the glomeruli of the olfactory bulb.
• After neurons carrying somatosensory proprioceptive or fine touch information synapse at the gracile and cuneate nuclei, axons from second-order neurons decussate at the level of the medulla and travel up the brainstem as the medial lemniscus on the contralateral (opposite) side.
• For example, the receptive field of a ganglion cell in the retina of the eye is composed of input from all of the photoreceptors which synapse with it, and a group of ganglion cells in turn forms the receptive field for a cell in the brain.
• It acts as a marker for neuroendocrine tumors, and its ubiquity at the synapse has led to the use of synaptophysin immunostaining for quantification of synapses.
• They can synapse with either rods or cones (rod/cone mixed input BCs have been found in teleost fish but not mammals), and they also accept synapses from horizontal cells.
• In mammals, the sound waves vibrate the tympanic membrane (ear drum), causing the three bones of the middle ear to vibrate, which then sends the energy through the oval window and into the cochlea where it is changed into a chemical signal by hair cells in the organ of Corti, which synapse onto spiral ganglion fibers that travel through the cochlear nerve into the brain.

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