and CORRECT Answers
Functions of Autonomic Nervous System: Conducts impulses that regulate smooth & cardiac muscles/glands
Sympathetic Functions: Fight, Flight, Fright Response
Parasympathetic Functions: Rest and Digest; "House Keeping"
Axons From Numerous Preganglionic Cells: Neuronal Convergance
Axons From One Preganglionic Cells: Neuronal Divergance
Dual Innervation: Many Structures Receive Innervation from Both Divisons
What are Preganglionic Sympathetic Axons of T1-L2 White Rami Communicantes
Carried By:
What are Postganglionic Sympathetic Axons carried from Gray Rami Communicantes
Sympathetic Trunk to Spinal Nerve By:
Sympathetic Preganglionic Neurons: Short in Length
Sympathetic Postganglionic Neurons: Long in Length
Parasympathetic Postganglionic Neurons: Short in Length
Parasympathetic Preganglionic Neurons: Long in Length
Preganglionic Neurotransmitters: Acetylcholine
Postganglionic Sympathetic Neurotransmitters: Mostly Norepinephrine
Postganglionic Parasympathetic Neurotransmitters: Acetylcholine
Pathway and termination of Postganglionic Neuron: SA + AV Nodes
Describe the preganglionic axon first neuron in the ANS pathway (thin, myelinated axon that extends to the
ganglion)
Describe the postganglionic axon second neuron in the ANS pathway (thin, unmyelinated axon that extends to the
effector cells)
Length of pre vs. post axons (Sympathetic): pre are short and post are long
, Length of pre vs. post axons (Parasympathetic): pre are long and post are short
Number of preganglionic axon branches (Sympathetic): Many Branches
Number of preganglionic axon branches Few Branches
(Parasympathetic):
Sympathetic Esophageal: inhibit esophageal smooth muscle
Parasympathetic Esophageal: coordinates smooth muscle activity during swallowing
Sympathetic Abdominal: innervate the pelvic, mesenteric, & urogenital organs
Parasympathetic Abdominal: direct effect on digestive functions