Biology

• What is homeostasis?

  Regulating internal body conditions
• What does the endocrine system involve?

  Glands, hormones, and blood vessels
• What are hormones?

  Chemical messengers released by glands
• What is the function of a gland?

  Releases hormones into the bloodstream
• What does the thermoregulatory centre do?

  Contains receptors sensitive to blood temperature
• What happens if body temperature is too high?

  Blood vessels dilate and sweat is produced
• What occurs if body temperature is too low?

  Blood vessels constrict and shivering occurs
• What is ADH's function?

  Makes kidney tubules more permeable to water
• What is deamination?

  Converting amino acids into ammonia
• What happens to ammonia after deamination?

  It is converted into urea for excretion
• What role does thyroxine play?

  Stimulates basal metabolic rate and growth
• When is adrenaline produced?

  In times of fear or stress
• What effect does adrenaline have on the body?

  Increases heart rate for oxygen delivery
• What characterizes Type 1 Diabetes?

  Insufficient insulin production by pancreas
• How is Type 1 Diabetes typically treated?

  With insulin injections
• What characterizes Type 2 Diabetes?

  Body cells no longer respond to insulin
• What are common treatments for Type 2 Diabetes?

  Carbohydrate-controlled diet and exercise
• What is a risk factor for Type 2 Diabetes?

  Obesity