Neurotransmission 0.0 / 5 ? PsychologyBLoAInternational BaccalaureateOther Created by: Lotto65Created on: 10-04-17 16:41 What type of cell is a neuron? Nerve cell 1 of 21 What are the tree branch structures on the left of the neuron called? Dendrites 2 of 21 What do the receptors on the end of dendrites do? Pick up signals from other neurons 3 of 21 What are the signals passed along neurons? Chemical substances called neurotransmitters 4 of 21 Where is the nucleus found in the neuron? In the soma (main body) 5 of 21 What does the nucleus do? Contains genetic material - instructions for the cell's activities 6 of 21 What do we call the signal that is eventually strong enough to travel down the axon of a neuron? Action potential 7 of 21 What are the axon terminals called? Synaptic buttons 8 of 21 What is released when the signal reaches the axon terminals? Neurotransmitters 9 of 21 What is the axon covered in? Why? Myelin to prevent the signal degrading 10 of 21 What is the specialised structure where communication between neurons occurs? Synapses 11 of 21 What is a synapse? An area where neurons are close enough to each other that they can pass chemicals from one another 12 of 21 What is the name of the neuron where the signal is initiated? Pre-synaptic neuron 13 of 21 What is the name of the neuron that receives a signal? Post-synaptic neuron 14 of 21 How are neurotransmitters packaged in the presynaptic neuron? In vesicles 15 of 21 What is a vesicle? A small sac 16 of 21 What do the vesicles do when the presynaptic neuron is excited by an action potential? Fuse with the presynaptic membrane and release their contents into the synaptic cleft 17 of 21 What do neurotransmitters interact with when in the synaptic cleft? Receptors on the postsynaptic membrane 18 of 21 Which process clears neurotransmitter molecules from the synaptic cleft? Diffusion 19 of 21 What do we mean by 'reuptake of neurotransmitters'? Neurotransmitters are recycled and reused and taken back up into the presynaptic neuron 20 of 21 What else could break down neurotransmitters in the synaptic cleft and send them back into the presynaptic neuron? Enzymes 21 of 21
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