Glands

• What is the primary function of the endocrine system?

  It releases hormones from glands.
• What is the role of adrenaline in the body?

  It speeds up bodily responses.
• How does noradrenaline affect blood vessels?

  It constricts blood vessels.
• What is the function of the adrenal glands?


  They release hormones like adrenaline and cortisol.
• What role does testosterone play in the body?

  It is involved in the development of male characteristics and sex drive.
• What is the function of the ovaries in the endocrine system?

  They release oestrogen and progesterone.
• What is the role of the pineal gland?

  It produces melatonin to regulate the sleep-wake cycle.
• How does melatonin affect sleep patterns?

  It increases when it's dark, making us feel sleepy.
• What condition is associated with the pineal gland's melatonin production?

  Seasonal Affective Disorder (SAD)
• What are the main hormones produced by the adrenal glands and their functions?

  • Adrenaline: speeds up bodily responses
  • Noradrenaline: constricts blood vessels
  • Cortisol: helps respond to stress
• What are the functions of testosterone and oestrogen?

  • Testosterone: development of male characteristics, sex drive
  • Oestrogen: regulates menstruation, female reproductive health
• What is the relationship between light exposure and melatonin levels?

  • Dark: melatonin levels rise, promoting sleepiness
  • Light: melatonin levels drop, promoting wakefulness