Edexcel Biology - Topic 8 - Nervous System 0.0 / 5 ? BiologyNervous SystemA2/A-levelEdexcel Created by: HenryCreated on: 14-05-14 09:54 The part of the nervous system consisting of the brain and spinal cord Central 1 of 23 The part of the nervous sytem consisting of sensory and motor nerves Peripheral 2 of 23 Part of the PNS that involuntarily controls smooth muscle, cardiac muscle and glands Autonomic 3 of 23 Part of the PNS that voluntarily controls skeletal muscle Somatic 4 of 23 Part of the autonomic nervous system that prepare the body for 'fight or flight' responses Sympathetic 5 of 23 Part of the autonomic nervous system that prepare the body for 'rest and digest' responses Parasympathetic 6 of 23 The type of neurone with its cell body at one end Motor 7 of 23 The type of neurone with its cell body located off the axon Sensory 8 of 23 The type of neurone with its cell body within the axon Relay 9 of 23 the long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells Axon 10 of 23 Extensions of a nerve cell which receive impulses and conduct them towards the cell body Dendrites 11 of 23 Cell which forms the myelin sheath around an axon Schwann Cell 12 of 23 A gap in the myelin sheath of a nerve, between adjacent Schwann cells Node of Ranvier 13 of 23 A bundle of nuerones held together Nerve 14 of 23 Cell which repsonds to a stimuli by generating an impulse to a sensory neurone Receptor 15 of 23 An organ or cell which acts in repsonse to a stimulus Effector 16 of 23 The membrane to which synaptic vesicles bind releasing neurotransmitter into the synaptic cleft Presynaptic 17 of 23 The membrane containing receptor proteins which neurotransmitter binds to initiating an action potential Postsynaptic 18 of 23 The chemical substance used to pass impulses across the synaptic cleft e.g. Acetylcholine Neurotransmitter 19 of 23 A synapse in which an action potential in the presynaptic membrane increases the likelihood of an action potential in the postsynaptic membrane Excitatory 20 of 23 A synapse in which an action potential in the presynaptic membrane decreases the likelihood of an action potential in the postsynaptic membrane Inhibitory 21 of 23 Type of summation where multiple neurones are needed to initiate an action potential Spatial 22 of 23 Type of summation where multiple impulses from on neurone are needed to initiate an action potential Temporal 23 of 23
Full set of notes on NERVOUS SYSTEM -A2 biology unit 5 for edexcel- 5.0 / 5 based on 1 rating Teacher recommended
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