Homeostasis & ResponseIntroduction

The Story: The Postal Service

Part of Hormones & Behaviour — GCSE Biology

This introduction covers The Story: The Postal Service within Hormones & Behaviour for GCSE Biology. Topic 8: Hormones & Behaviour It is section 1 of 10 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 10

Practice

15 questions

Recall

20 flashcards

📬 The Story: The Postal Service

If the nervous system is like a phone call (instant but short), the hormonal system is like sending a letter. It takes longer to arrive, but the message lasts longer. Hormones are chemical messengers, released by glands into the blood, traveling to target organs where they trigger effects that can last hours, days, or even years.

Keep building this topic

Read this section alongside the surrounding pages in Hormones & Behaviour. That gives you the full topic sequence instead of a single isolated revision point.

Nervous vs Hormonal System Key Glands and Their Hormones How It Works: Adrenaline and the Fight-or-Flight Response

Practice Questions for Hormones & Behaviour

Which response does adrenaline prepare the body for?

A. Fight or flight
B. Rest and digest
C. Growth and repair
D. Cooling down

1 markfoundation

State two effects of adrenaline on the body during a fight-or-flight response.

2 marksstandard

Quick Recall Flashcards

How do hormones reach the brain?

Hormones travel through the bloodstream to reach target organs including the brain, where they can influence neurotransmitter production.

How do hormones affect behaviour?

Hormones act as chemical messengers that influence brain function, neurotransmitter activity, and behavioural responses like mood and alertness.

Want to test your knowledge?

PrepWise has 15 exam-style questions and 20 flashcards for Hormones & Behaviour — with adaptive difficulty and instant feedback.

Join Alpha

Back to

Hormones & Behaviour

Nervous vs Hormonal System