Presentation on theme: "Bodily Responses To Stress"— Presentation transcript:
1 Bodily Responses To Stress The Sympathetic Adrenal Medullary AxisThe Hypothalamic Pituitary Adrenal AxisBodily Responses To StressThe Nervous System
2 What is stress, and what does it do to us? ( discovery channel police man)
3 Brain Spinal cord The nervous system CNS (central nervous system) PNS (peripheralSNS (somaticANS (autonomicSympatheticarousal(involuntary)ParasympatheticSensory and motornerves (voluntary)BrainSpinal cord
4 The Nervous System Central Nervous System Peripheral Nervous System BrainSpinal ChordAutonomic Nervous System[Muscles]SomaticNervous System[Bones]Sympathetic Nervous SystemParasympathetic Nervous System
5 Sympathetic Nervous System The Nervous SystemSympathetic Nervous SystemThe Sympathetic Branch of the Autonomic Nervous System is responsible for the SAM Response to Stress.It is responsible for Physical Arousal of the body when dominant (due to a Stressor).
6 Parasympathetic Nervous System The Nervous SystemParasympathetic Nervous SystemThe Parasympathetic Branch of the Autonomic Nervous System is responsible for Counteracting the SAM Response to a Stressor.It is responsible for Relaxation and Energy Conservation.
7 The Sympathetic Adrenal Medullary Axis SAM – The Immediate Response to a Stressor.The Hypothalamus:Activates the Sympathetic Branch of the Autonomic Nervous System - ANS.This sends Neuron-Messages to the Inner Core of the Adrenal Gland, the Adrenal Medulla.This results in the secretion of Adrenaline and Nor-adrenaline.
9 The Sympathetic Adrenal Medullary Axis SAM – The Immediate Response to a Stressor.The Results of Adrenaline and Nor-AdrenalineAdrenaline and Nor-Adrenaline are released into the Bloodstream.This causes the Fight or Flight Response.Physiological changes occur such as:Increased Oxygen & Glucose to Brain & MusclesIncreased Heart RateDeeper RespirationDilating PupilsDigestion Suppression
10 The Sympathetic Adrenal Medullary Axis The HypothalamusThe ANSActivatesCausesThe Adrenal MedullaTo Release…Adrenaline and Nor-Adrenaline
11 The Hypothalamic Pituitary Adrenal Axis HPA – The Long Term Response to a Stressor.The Hypothalamus:Activates the Pituitary Gland.This causes ACTH [Stress Hormone] to be released.This stimulates the Outer Edge of the Adrenal Gland, the Adrenal Cortex.This allows the production of Glucocorticoids – Glucose and Cortisol.
14 Adrenal Cortex Adrenal cortex (remember it by thinking of it as the ‘covering’ layer of the adrenal gland!Adrenal CortexAn endocrine gland!
15 The Hypothalamic Pituitary Adrenal Axis HPA – The Long Term Response to a Stressor.The Results of Glucose and CortisolGlucocorticoids are released into the Liver to release stored Glucose.This causes the Immune System to be suppressed.Other Effects Include:✓ Heightened and Maintainable Energy Supply✓ Lower Pain Sensitivity✗ Lower Immune Response✗ High Blood Pressure
16 The Hypothalamic Pituitary Adrenal Axis The HypothalamusPituitary GlandActivatesCauses the Release of…Adrenal CortexACTHWhich Acts on…To Release…Cortisol and Glucose