biopsych ; neurons + synaptic transmission 0.0 / 5 ? PsychologybiopsychologyA2/A-levelAQA Created by: ilovetheofficeCreated on: 30-05-18 11:11 STRUCTURE + FUNCTION OF NEURONS SDGD 1 of 39 what do neurons provide the nervous system with? primary means communication 2 of 39 - types of neuron dfgf 3 of 39 how many? 3 4 of 39 called? motor neuron / relay neuron / sensory neuron 5 of 39 - structure of a neuron df 6 of 39 cell body includes a? nucleus 7 of 39 which contains what? genetic material of the cell 8 of 39 what are the branch-like structures that protrude called? dendrites 9 of 39 what do these do? carry nerve impulses from neighbouring neurons toward cell bod 10 of 39 what does the opposite? axon 11 of 39 axon is covered in a fatty layer of? myelin sheath 12 of 39 that does what two things? protects axin / speeds up electrical transmission 13 of 39 what would hapen if myelin sheath was continuous? slow down electrical transmission 14 of 39 myelin sheath is segmented by gaps called? nodes of ranvier 15 of 39 why does this speed? forces impulse to jump across 16 of 39 finally at end of axon are? terminal buttons 17 of 39 - electrical transmission (firing of a neuron) g 18 of 39 @ resting state what is the charge of the neron compared to outside? negative 19 of 39 when activated by stimulus, neuron becomes positively charged for how long? split-second 20 of 39 causing what to occur? action potential 21 of 39 this creates what that travels down the neuron? electrical impulse 22 of 39 SYNAPTIC TRANSMISSION FDBD 23 of 39 - chemical transmission (synapses) sdgd 24 of 39 each neuron is separated from the next by a? synapse 25 of 39 what is the space between two neurons called? synaptic cleft 26 of 39 and what is before that? presynaptic terminal 27 of 39 and postsynaptic? receptor site 28 of 39 synaptic transmission tramsnits signals between neurons how? chemically 29 of 39 when electrical impulse reaches end of neuron it triggers the release of what? neurotransmitter 30 of 39 from where? synaptic vesicles 31 of 39 - neurotransmitter dgd 32 of 39 what is a neurotransmitter? chemical that diffuses across synapse to next neuron 33 of 39 once neurotransmitter crosses gap its taken up by? postsynaptic receptor sites 34 of 39 what happens here? chem converted back to eletric 35 of 39 - excitation and inhibition dfgdf 36 of 39 neurotrans will have one of which two effects on neighbouring neuron? excitatory / inhibitory 37 of 39 for instance serotonin causes what? inhibition 38 of 39 bc does what to neyron? makes negatively charged + less likely to fire 39 of 39
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