Question 6
State three effects of low secretion of thyroxin in humans. [3 marks]
Observation
Many candidates could not attempt the question.
The expected answers are:
Effects of low secretion of thyroxin in humans
- - cretinism in children/dwarfism/stunted growth
- - low body temperature
- - body metabolism is slowed down/lowered
- - slow heart rate/beat
- - slow/sluggish physical activity
- - memory loss
- - thick skin/myxedema in adult
- - in adult body weight increases.