Chapter 2 notes

Chapter 2 notes - 9/7/11 Chapter 2: - Fight or Flight...

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9/7/11 Chapter 2: - Fight or Flight Response o Designed for one purpose which is to survive o Whether we choose fight or flight depends on how stressor is perceived - Autonomic Nervous System (ANS) o Activity of ANS is completely beyond our control o They are automatic responses o 2 Branches of ANS are sympathetic and parasympathetic o Sympathetic Nervous System : Initiates fight or flight response o Parasympathetic Nervous System : Counteracts the sympathetic nervous system Brings body back to homeostasis - Hypothalamus o Controls ANS o Links the nervous system and the endocrine system through the pituitary gland o Chief region where sympathetic and parasympathetic responses integrate o Send message to endocrine system to release stress hormone o Stress hormones Released : : Released into the blood stream by the Adrenal Medulla Cortisol : Released into adrenal glands from the adrenal cortex These hormones send messages to the entire body to either fight or
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Chapter 2 notes - 9/7/11 Chapter 2: - Fight or Flight...

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