Presentation on theme: "STRESS, FEAR, AND THE FIGHT OR FLIGHT RESPONSE. FIGHT OR FLIGHT OVERVIEW AMYGDALA HYPOTHALAMUS PITUITARY GLAND ADRENAL GLAND THROUGHOUT BODY."— Presentation transcript:
STRESS, FEAR, AND THE FIGHT OR FLIGHT RESPONSE
FIGHT OR FLIGHT OVERVIEW AMYGDALA HYPOTHALAMUS PITUITARY GLAND ADRENAL GLAND THROUGHOUT BODY
THE HYPOTHALAMUS AND THE PITUITARY GLAND
INSIDE THE PITUITARY GLAND
Incoming info into Thalamus Signal sent to Amygdila (decodes emotions) Transmitted to Hypothalamus (Responds by initiation F or F) Hypo. sends nerve impulse down spine Hypo. activates Pituitary gland (Releases Hormone – ACTH) THE BRAIN
THE ADRENAL GLAND AND INSIDE
EPINEPHRINE SPREADS THROUGH THE BODY
Nerve impulse from Hypo./ ACTH both reach Adrenal Nerve impulse signals chromofin cells – Epinephrine ACTH signals cells to produce Cortisol Both chemicals released from Adrenal gland Cortisol raises blood sugar (Frees fatty acids) Epinephrine reaches liver (Increases glucose production – more potential energy – ATP) –Reaches lungs (relaxes muscles/increases respiration (more O2 for muscles) –Reaches Heart (Beats faster – circulates energy faster) THE BODY
FIGHT OR FLIGHT OVERVIEW Brain receives/sends signals to pituitary Pituitary releases messengers to Adrenal Adrenal produces Epinephrine and Cortisol Cortisol frees fatty acids/raises sugar Adrenaline increases resp. allows more o2/energy (ATP)
WHAT IS FEAR?
Thalamus - decides where to send incoming sensory data (from eyes, ears, mouth, skin) Sensory cortex - interprets sensory data Hippocampus - stores and retrieves conscious memories; processes sets of stimuli to establish context Amygdala - decodes emotions; determines possible threat; stores fear memories Hypothalamus - activates "fight or flight" response TEXT FROM PATHS OF FEAR
Increase Heart rate Pupils dilate (take in light) Veins in skin tighten – allow flow to major muscles (chills – less blood in skin) Muscles tense (goose bumps) Focus on immediate SO WHAT DOES THIS RESPONSE LOOK LIKE?