endocrine system/hormones

• adrenaline: increases heart rate & blood flow

  • assists in glucose metabolism
• ghrelin: stimulates food intake

  • stimulates growth hormone release
• leptin: appetite suppressant

  • regulates energy balance so the body doesn't trigger a hunger response
• melatonin:

  • sleep
  • anti-aging
  • body clock
• oxytocin: controls maternal behavior (labor/lactation)

  • parent-infant bonding
  • sexual behavior
  • romantic recognition, attachement, trust