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Sympathetic ANS

Questions

QuestionAnswer
Which Chemical Neurotransmitter does the Sympathetic division employ? Norepinephrine
What are Sympathetic Fibers termed? Adrenergic
What is the purpose of the Sympathetic NS? preparation for Emergency or Physical Stress - Fight or Flight
What are some of the responses of the Sympathetic NS? Increases HR/BP, Dilates Pupils, Raises Respiratory rate and volume, INHIBITS Digestion
Where is the Sympathetic division located? Thoracolumbar (12 Thoracic, 3 lumbar) - T-1 ---> L-3
What is the Anatomical term for the "Sympathetic Chain" and where is it located? Paravertebral Ganglia - paravertebral/bilateral to spine
What structures make up the Paravertebral Ganglia? White Rami, Gray Rami, Splanchnics
What is the function of the White Rami? TOWARD Spinal cord - contain Short, Myelinated, PREganglionic fibers
What is the function of the Gray Rami? FROM Spinal Cord - contain UNmyelinated, POSTganglionic fibers
Which Rami merge with Spinal Somatic Nerves? Gray Rami
What are the functions of Splanchnics? Myelinated, PREganglionic fiber passing through Paravertebral ganglia to innervate Abdominal organs
Do Splanchnics form ganglia? Yes, 3 peripheral (collateral) ganglia in Abdominal Cavity
Preganglionic Neurons in the Sympathetic division are...? Short
Postganglionic Neurons in the Sympathetic division are...? Long
What is the action of the Effectors in the Sympathetic division? Excitatory
Created by: kristel387