The central nervous system in humans is made up from what?

Both the spinal cord and the brain

The spinal chord, brain and relay neurones

Which of the following statements about the nervous system and hormones is incorrect?

When compared to control via the nervous system, hormones act faster but their effects last longer

When compared to control via the nervous system, hormones act more slowly and their effects last longer

The effectors of the nervous system are muscles or glands, the effectors for hormones are target cells, tissues and organs

The response of control by the nervous system is a muscle contraction or hormone secretion, the response to hormones is a chemical change in the body

Which of the following statements about insulin is correct?

Insulin is secreted by the liver and transported to the pancreas where it changes sugar into starch

Insulin is a catalyst that destroys glucose in the blood

Insulin is a hormone that helps to regulate the water content of the blood

Insulin is secreted by the pancreas and it stimulates cells in the liver to convert glucose into glycogen

What are the missing words in the correct order from this description of a reflex action? 1. A ______ detects a stimulus. 2. A sensory neurone sends impulses to a ______ neurone. 3. A motor _______ sends impulses to an effector. 4. An effector produces a ________.

sensory, effector, relay, response

receptor, relay, neurone, response

finger, motor, sensory, receptor

receptor, neurone, response, receptor

When you are too hot or too cold, the brain sends nerve messages to the skin to do several things. Which one of the following is not a response used to control body temperature?

Tiny hairs on the skin can be raised and lowered by small muscles

Blood vessels in the skin can be dilated or contracted

Glands in the skin are stimulated to release greater quantities of natural oils onto the surface of the skin

Glands in the skin are stimulated to release sweat

Why is it important to maintain an even temperature of 37oC for the human body?

It is a nice temperature to be at

It is an easy temperature to maintain

When life first started, that was the temperature of the Earth

The enzymes in the body work most efficiently at that temperature

The main method of controlling the amount of water in the body is via the kidneys. How does this happen?

A hormone is used to send a message to the kidney to excrete more water

Nerve impulses from the brain are used to send a message to the kidney to excrete more water

No message is needed, it will happen automatically

GCSEScience★★ Medium

GCSE Science Biology - Messages in the Body (AQA) Quiz

Revise how nerves and hormones transmit messages in the body. Learn how receptors, reflexes, and the brain work together in this GCSE Biology quiz.

Written by Daniel FosterReviewed by Dr. Emma ClarkeUpdated 17 Mar 2026

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Quiz details

Topic: Biology Messages In The Body Aqa Syllabus A

Questions: 10

Duration: 10 min

Difficulty: ★★ Medium

Focus: applying Biology Messages In The Body Aqa Syllabus A with consistent method and answer precision.

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It measures applied accuracy in biology messages in the body aqa syllabus a, not just definition recall.

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Revise how nerves and hormones transmit messages in the body. Learn how receptors, reflexes, and the brain work together in this GCSE Biology quiz.

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