Biology Topic Practice

Adrenaline & Thyroxine

Adrenaline and thyroxine are hormones released in response to specific body needs and states.

Are those hormonal questions easy for you?

What is Adrenaline & Thyroxine?

"Adrenaline and thyroxine are key hormones involved in the "fight or flight" response and the regulation of metabolic rate, respectively."

Question 1

Which hormone prepares the body for a 'fight or flight' response?

Question 2

Which hormone prepares the body for a 'fight or flight' response?

Question 3

What is one role of thyroxine in the body?

Two Key Hormones

Adrenaline is produced in times of fear or stress to increase heart rate and boost oxygen delivery.

Thyroxine (from the thyroid) stimulates basal metabolic rate and is regulated by negative feedback.

Exam Tip

Adrenaline is NOT controlled by negative feedback, unlike many other hormones.

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