Biology Topic Practice

Adrenaline & Thyroxine

Adrenaline and thyroxine are key hormones that control our body's response to stress and its metabolic rate.

Where is thyroxine produced?

What is Adrenaline & Thyroxine?

"Adrenaline is a hormone that prepares the body for action; thyroxine is a hormone that regulates the rate of metabolism."

Question 1

Which answer best completes the statement? ____ involves giving a mother FSH and LH to stimulate eggs

Question 2

Choose the correct option to complete the statement. ____ is when blood vessels narrow to keep heat in

Question 3

Which answer best completes the statement? FSH causes an egg to ____ in the ovary

Question 4

Which answer best completes the statement? ____ is a waste product formed from the breakdown of proteins

Metabolic Hormones

Adrenaline: Produced by adrenal glands in times of fear or stress; increases heart rate to prepare for "fight or flight".

Thyroxine: Produced by the thyroid gland; stimulates base metabolic rate and is important for growth.

Thyroxine levels are controlled by negative feedback.

Exam Tip

Adrenaline is NOT controlled by negative feedback in the same way thyroxine is; it is a rapid response to a specific stimulus.

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