endocrine system

• What is the primary function of the endocrine system?


  Regulation of bodily functions (homeostasis)
• What are hormones?


  Chemicals produced by endocrine glands
• How are hormones secreted into the body?


  They are secreted into the bloodstream from endocrine glands
• What triggers the secretion of hormones from endocrine glands?


  A direct signal from the brain
• What is the role of the endocrine system in the fight or flight response?


  • Works with the ANS
  • Activated by the hypothalamus upon detecting a stressor
  • Executes a rapid response in the body
• What part of the brain detects stressors in the fight or flight response?

  The hypothalamus
• What happens to the sympathetic branch of the ANS during a stress response?


  It is activated in response to fear
• What is the normal state of the ANS when not under stress?


  Parasympathetic (resting) state
• What occurs in the body once the threat has passed?

  • Parasympathetic response returns the body to normal
  • Breathing rate, heart rate, and blood pressure normalize
  • Pupils constrict
  • Digestion resumes
• What are the components of the stress response?

  1. Hypothalamus
  2. Adrenal medulla
  3. Adrenaline
  4. Bodily organs
  5. Pupils dilate, Heart rate (HR) increases, Breathing rate (BR) increases, Blood pressure (BP) increases, Digestion stops