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Nervous
nervous system
| Question | Answer |
|---|---|
| What is the purpose of the neuroglia cell | to structurally and functionally support the neurons |
| what are examples of the CNS | astrocyte and oligondendrocytes |
| Examples is PNS | Schwann cells` |
| Synaptic Transmission? | the impulse |
| Synapse | junction between 2 neurons or a neuron and target cell |
| telodendron | branched structure on presynaptic neurons |
| synaptic cleft | gap between the two cells |
| neurotransmitter | chemical stimulates and bridges the synaptic cleft |
| Presynaptic neurons | depolarization wave to the synapse and releasing the chemical to stimulate the cell |
| postsynaptic neurons | neuron that contains the receptor and receives the neurotransmitter |
| Terminal/synaptic end bulb | slightly enlarged bulb that contains many mitochondria that provides energy to the proccesses |
| receptors | specialized proteins on a posy synaptic membrane "lock and key" |
| Primary neurotransmitter of sympathetic nervous system | norepinephrine |
| Adrenergic neurons | neurons that release norepinephrine |
| Primary neurotransmitter of parasympathetic | Acetylcholine |
| cholinergic neurons | neurons that release acetylcholine |
| nicotinic acetylcholine recptors | located at the neromuscular junction |
| muscarinic acteylcholine recptors | target organs |
| how many neuroglia cells per neuron | 10:1 |
| parts of the neurons | dendrites, cell body, axon, nodes of ranvier, telodendron |
| neuron function | not stimulating is the resting state |
| Polarization | negative inside and positive outside |
| depolarization | stimulated impules from an adjoining neuron . |
| telodendron | branched structure on presynaptic neuron |
| what are the 2 classifications of nerotransmitters | exciting neurotransmitters(depolarization of the membrane) and inhibatory neurotransmitters(hyperpolarization) |
| Vessels(alpha1) | adrenergic receptors, vasoconstriction of the skin,GI tract and kidney |
| Heart(beta1) | adrenergic receptors increase heart rate and force of constriction |
| bronchioles (beta2) | adrenergic receptors cause bronchodialation |
| catecholamines | norepinephrine, epinephrine, and dopamine |
| GABA | found in the brain , helps tranquilization w/sedation |
| Glycine | found in the spinal cord |
Created by:
kanthonyeacc
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