Flashcards
Chemical Synapses
Flashcards do conjunto (17)
- 1Chemical SynapsesNo gap junction;
slower than electrical synapse - 2—Synaptic Cleft:
between pre/post synaptic neurons;
prevents impulses to pass to another;
Chemical Event;
Unidirectional communication - 3—1. Information Transfer:
Nerve impulse reach axonal terminal of presynap neuron and Open Ca+ channel
- 4—2. Info Transfer:
Neurotrans released to synap cleft wia exocytosis in response to synaptotagmin
- 5—3. Info Transfer:
Neurontrans cross synap cleft & bind to (chemical gated) receptors on postsynapic neuron
- 6—4. Info Tranfer:
Postsynaptic membrane permeability changes, causing an excitatory
(outside more negative?) potential change
- 7—5. Info Transfer:
Inhibitory Effect
- 8—Neurotransmitter bound to postsynapic neuron: continuous postsynaptic effect;
Blocks reception of new signals;
Removal: degrading enzymes; reabsorb by astrocytes in presynap terms; diffuse from synap cleft
- 9—Synaptic Delay:
Time needed to release neurotrans, diffuse cross synap, bind to receptor
reate-limiting step of neural transmits
- 10nfjkdsPostsynaptic Potentials:
amount of neurotrans release
Time of neurotrans bound - 112 Tyes of postsynaptic PotentialsEPSP- graded
IPSP - 12fkdsljfdk(EPSP)Excitatory Postsynap Pontent
Graded potentials; can initiate action potential; Only chem gate channel; Na+ and K+ move @ same time;
Postsynaptic membranse NO generate action potentials
- 13—Inhibitory Synap (IPSP)
neurotrnas bind to recept @ inhibitory synap; Membrane more permeable to K+ & Cl-; Inner surface neg; reduce postsynap neuron ability to produce action potential
- 14—Single EPSP: no action potential
- 15—Temporal Summation: presynaptic neurons transmit impulses in rapid-fire order
- 16—Spatial Summation: postsynaptic neuron is stimulate by big # of terminals @ same time
- 17—Integration of ISPS & EPSP determine if action potential will take place
Informações
- Descrição
- 12th grade anatomy (Nerves) FlashCards sobre Chemical Synapses, criado por Kaylan Jackson em 08-12-2020.
- Criado por
- Kaylan Jackson
- Visualizações
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- Avaliação
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