Neuron The neuron is the basic cell of the nervous system Neurons provide an instant method of cellular communication 家学花n 16
Neuron • The neuron is the basic cell of the nervous system • Neurons provide an instant method of cellular communication 16
Neuroanatomy Synapse Synapse Neurotransmitters (chemicals held in terminal Terminal branches of axon buttons that travel through synaptic gap) (form junctions with other cells) Dendrites (receive messages from other cells) Axon (passes messages away from the cell body to Cell body other neurons, (the cell's life- muscles,or glands) support center) Myelin sheath (covers the axon of some neurons and helps speed Neural impulse neural impulses) (electrical signal traveling down the axon)
Neuroanatomy Synapse Synapse Neurotransmitters (chemicals held in terminal buttons that travel through synaptic gap)
Synapse Definition of synapse: A neuroeffector junction between two neurons,across which a signal can pass Pre-synaptic neuron: Where a neurotransmitter is synthesized, stored and released upon cell activation. Receiving Neural impulse Post-synaptic neuron or effector cell: neuron Where neurotransmitter is detected and its action translated into cellular activities Axon Synaptic cleft:A gap between the pre- terminal and postsynaptic cells that is about Synaptic bulb Synaptic 15~1000 nm wide 出 vesides Presynaptic neuron Dendrite Synaptic of receiving cleft neuron Postsynaptic neuron Neurotransmitter Receptor molecules sites 18
18 Synapse Definition of synapse: A neuroeffector junction between two neurons, across which a signal can pass Presynaptic neuron Postsynaptic neuron Pre-synaptic neuron: Where a neurotransmitter is synthesized, stored and released upon cell activation. Post-synaptic neuron or effector cell: Where neurotransmitter is detected and its action translated into cellular activities. Synaptic cleft : A gap between the preand postsynaptic cells that is about 15~1000 nm wide
What does a synapse look like? Electron Micrograph Microscopy with Microscopy with Fluorescent Proteins Fluorescent Proteins Murthy_HHMI_teachers_2005_sub.ppt
What does a synapse look like? Electron Micrograph Microscopy with Microscopy with Fluorescent Proteins Fluorescent Proteins Murthy_HHMI_teachers_2005_sub.ppt
Classes of Neurotransmitters Amino Biogenic Acids Amines Peptides Others Glutamate GABA Acetylcholine Monoamines Substance ATP Nitric P Oxide Serotonin Catecholamines Dopamine Noradrenaline/ Adrenaline/ Norepinephrine Epinephrine
Classes of Neurotransmitters Biogenic Amines Amino Acids Peptides Others Acetylcholine Monoamines Serotonin Catecholamines Noradrenaline/ Norepinephrine Dopamine Adrenaline/ Epinephrine Substance P ATP Nitric Oxide Glutamate GABA 20