NEUROBIOLOGY AUXILLARY GLOSSARY ACETYLCHOLINE – A neurotransmitter in both the brain and peripheral nervous system* (PNS). In the brain it helps regulate memory, whilst it controls the actions of skeletal and smooth muscle within the PNS. ACTION POTENTIAL – An electrical phenomenon which occurs when a neurone is activated and temporarily reverses the electrical state of its interior membrane from negative to positive. An electrical charge travels along the axon to the neurone’s ending (terminal) where it triggers the release of a neurotransmitter* and then disappears. ADRENALINE (U.S. - Epinephrine) – A hormone released by the adrenal medulla* and a neurotransmitter acting at the level of the autonomic nervous system and the brain. ADRENAL CORTEX – The outer layer of the adrenal, a small endocrine gland located near the kidney. It produces and secretes several horm...
ABA / abscisic acid ; auxin / IAA ; [5] 91. 1 ref to change in receptor ; 2 creates, receptor potential / generator potential ; 3 if greater than threshold value ; 4 depolarisation / AW, (of axon / sensory / afferent, neurone) ; 5 ref to action potential (anywhere in answer) ; 6 ref to, myelin sheath / myelinated neurones ; 7 saltatory conduction / AW ; 8 ref to nodes of Ranvier ; 9 synapse with, motor / effector / efferent, neurone ; 10 ref to, calcium ions / calcium channels ; 11 vesicles of neurotransmitter fuse with presynaptic membrane ; 12 named neurotransmitter ; 13 secretion / exocytosis (from presynaptic membrane) ; R release 14 diffusion across synaptic cleft ; 15 receptors on postsynaptic membrane ;
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