Control of Thyroxine Levels - Negative Feedback (Leaving Cert Biology): Quizzes
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Practise the questions
12 questions from this quiz
Where is the thyroid gland located?
Where is the thyroid gland located?
In the neck, in front of the larynx
Which hormone does the thyroid gland produce?
Which hormone does the thyroid gland produce?
Thyroxine
What does thyroxine control in the body?
What does thyroxine control in the body?
Metabolism
Why is the pituitary gland called the 'master gland'?
Why is the pituitary gland called the 'master gland'?
Its hormones cause other glands to release their hormones
Where is the pituitary gland located?
Where is the pituitary gland located?
At the base of the brain
What is the function of TSH?
What is the function of TSH?
Stimulates thyroid to release thyroxine
What does FSH control?
What does FSH control?
Formation of eggs and sperm
What is the function of ADH?
What is the function of ADH?
Regulates water balance in kidneys
What mechanism regulates thyroxine concentration?
What mechanism regulates thyroxine concentration?
Negative feedback
What happens when thyroxine levels are normal?
What happens when thyroxine levels are normal?
No TSH is produced
What happens when thyroxine levels drop below normal?
What happens when thyroxine levels drop below normal?
Pituitary produces TSH
What does Growth Hormone (GH) do?
What does Growth Hormone (GH) do?
Causes cells to increase in size