Synapse 3.0 / 5 based on 1 rating ? BiologyNervous systemA2/A-levelWJEC Created by: rhiannonCreated on: 15-10-13 20:08 What does the arrival of an impulse cause? Permeability of the presynaptic knob to alter and Calcium ions can enter in 1 of 5 What does the influx of calcium ions cause? vesicles containing neurotransmitters to fuse with the membrane and release neurotransmitters into the synaptic cleft 2 of 5 What do the neurotransmitters do? They diffuse across the synaptic clefts and bind to the receptors on the sodium ion channels on the post synaptic membrane 3 of 5 What happens once the neurotransmitters have binded to the receptors? Sodium ion channels open and allow the diffusion of sodium ions across the synaptic cleft 4 of 5 What is at least one function of a synapse? To ensure unidirectional flow 5 of 5
Comments
No comments have yet been made