BIOL 2410 Lecture Notes - Lecture 24: Autonomic Nervous System, Parasympathetic Nervous System, Sympathetic Nervous System

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Neuron physiology xii - the autonomic nervous system. The autonomic nervous system consists of : Functions in the ght or ight response. The autonomic nervous system innervates organs and glands that are not under conscious control. Autonomic nervous system activity is in uenced by: Information determined by chemoreceptors located in the hypothalamus. Concentrations of o2 and co2 are controlled. Doesn"t not require inputs from the brain for function ** Autonomic re exes are spinal re ex that do not need in uence form descending tracts. The autonomic nervous system has the ability to modify activities in internal organs that function without input from the ans. Autonomic re exes are an important player in maintenance of homeostasis and work together closely with the endocrine system. Antagonistic control refers to opposing effects of the two branches of the autonomic nervous system. One branch is excitatory and the other inhibitor. Sns increases heart rate/psns decreases heart rate.

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