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What are the general functions of the ANS? 1. regulates activity of Smooth and Cardiac Muscle and some Glands; 2. Involuntary stabilization of life support systems (Homeostasis)
What are the general features of the ANS? 1. entirely MOTOR neurons; 2. features 2 neurons between CNS and Effector; 3. Sympathetic and Parasympathetic; 4. Dual Motor Innervation
What are the 2 antagonistic divisions of the ANS? Sympathetic = Excitatory; Parasympathetic = Inhibitory
What is Dual Motor Innervation? wherein Effector is supplied with 1 Sympathetic and 1 Parasympathetic fiber
Why is Dual Motor Innervation beneficial? provides both the Fight or Flight reflexes as well as the Rest and Digest state needed for normal bodily functions to take place
Name some exceptions to Dual Motor Innervation. Adrenal gland, Sweat glands, Arrector Pili, and most Blood Vessels - receive only Sympathetics
What structure controls the ANS? Hypothalamus
What are the functions of the Hypothalamus? controls ANS actions of Medulla, thermoregulation, and Food & Water intake
The Sympathetic Center is controlled by what structure? POSTERIOR Hypothalamus
The Parasympathetic Center is controlled by what structure? ANTERIOR Hypothalamus
What are the functions of the Medulla? controls Respiration, Heart activity, Blood Pressure, ans G.I. Secretions
What part of the brain is part of the ANS but not usually involved? Cerebral Cortex
In which instances is the Cerebral Cortex involved in the ANS? certain Psychological states can influence Hypothalamus (Yoga, Meditation, Blushing, Fainting)
Created by: kristel387