Adrenaline, thyroxine and negative feedback, including TRH
I can describe the roles of the hormones adrenaline and thyroxine in the human body, and explain what is meant by negative feedback.
Adrenaline, thyroxine and negative feedback, including TRH
I can describe the roles of the hormones adrenaline and thyroxine in the human body, and explain what is meant by negative feedback.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- The hormone adrenaline is secreted by the adrenal gland during stress; it causes the body to prepare for rapid action.
- The hormone thyroxine is secreted by the thyroid gland; it controls growth and the rates of chemical reactions in cells.
- The pituitary gland secretes hormones that control other glands.
- Hypothalamus secretes TRH; this causes pituitary gland to secrete TSH; this causes thyroid gland to secrete thyroxine.
- Thyroxine causes the pituitary gland to stop secreting TSH; this is an example of negative feedback.
Keywords
Adrenaline - A hormone secreted by the adrenal glands in times of fear or stress.
Thyroxine - A hormone secreted by the thyroid gland that stimulates the basal metabolic rate.
Negative feedback - A mechanism where changes to conditions cause an action to reverse the change, keeping conditions stable.
Gland - An organ or tissues that produces and secretes substances, such as hormones.
Common misconception
Negative feedback only works to reverse high levels back to normal.
The slide deck has several slides where changes are described as being high and low and there is a CFU question in the final learning cycle that specifically assesses this misconception.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
adrenal gland
pituitary gland
thyroid gland
hypothalamus
