Nervous System — GCSE Biology Revision
Revise Nervous System for GCSE Biology. Step-by-step explanation, worked examples, common mistakes and exam-style practice aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP.
At a glance
- What StudyVector is
- An exam-practice platform with board-aligned questions, explanations, and adaptive next steps.
- This topic
- Nervous System in GCSE Biology: explanation, examples, and practice links on this page.
- Who it’s for
- Students revising GCSE Biology for UK exams.
- Exam boards
- Practice is aligned to major specifications (AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP).
- Free plan
- Sign up free to use tutor paths and feedback on your answers. Free access is 3 days uncapped, then 30 min practice/day. Pricing
- What makes it different
- Syllabus-shaped practice and progress tracking—not generic AI answers.
Topic has curated content entry with explanation, mistakes, and worked example. [auto-gate:promote; score=70.6]
Next in this topic area
Next step: Reflex Actions
Continue in the same course — structured practice and explanations on StudyVector.
Go to Reflex ActionsWhat is Nervous System?
The nervous system is a complex network of nerves and cells that transmit signals between different parts of the body. It consists of the Central Nervous System (CNS), which includes the brain and spinal cord, and the Peripheral Nervous System (PNS), which consists of nerves connecting the CNS to the rest of the body. It enables rapid responses to stimuli, coordinating actions and transmitting information.
Board notes: Covered by all major boards (AQA, Edexcel, OCR). The structure of neurones and the pathway of a nerve impulse are key areas.
Step-by-step explanationWorked example
You touch a hot object. Sensory receptors in your skin detect the heat and send a nerve impulse along a sensory neurone to your spinal cord (part of the CNS). In the spinal cord, the impulse is passed to a relay neurone and then to a motor neurone. The motor neurone carries the impulse to a muscle in your arm (the effector), which contracts, pulling your hand away.
Practise this topic
Jump into adaptive, exam-style questions for Nervous System. Free to start; sign in to save progress.
Common mistakes
- 1Confusing the CNS and PNS. The CNS is the processing centre (brain and spinal cord), while the PNS is the network of nerves that carries messages to and from the CNS.
- 2Thinking that nerve impulses are electrical currents like in a wire. They are actually electrochemical signals involving the movement of ions across the nerve cell membrane.
- 3Forgetting the three main types of neurone. Sensory neurones carry signals from receptors to the CNS, relay neurones carry signals within the CNS, and motor neurones carry signals from the CNS to effectors (muscles or glands).
Nervous System exam questions
Exam-style questions for Nervous System with mark-scheme style solutions and timing practice. Aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP specifications.
Nervous System exam questionsGet help with Nervous System
Get a personalised explanation for Nervous System from the StudyVector tutor. Ask follow-up questions and work through problems with step-by-step support.
Open tutorFree full access to Nervous System
Sign up in 30 seconds to unlock step-by-step explanations, exam-style practice, instant feedback and on-demand coaching — completely free, no card required.
Try a practice question
Unlock Nervous System practice questions
Get instant feedback, step-by-step help and exam-style practice — free, no card needed.
Start Free — No Card NeededAlready have an account? Log in
Step-by-step method
Step-by-step explanation
4 steps · Worked method for Nervous System
Core concept
The nervous system is a complex network of nerves and cells that transmit signals between different parts of the body. It consists of the Central Nervous System (CNS), which includes the brain and spi…
Frequently asked questions
What is a synapse?
A synapse is a tiny gap between two neurones. When a nerve impulse reaches the end of one neurone, it triggers the release of a chemical neurotransmitter, which diffuses across the synapse and binds to the next neurone, starting a new impulse.
What is the difference between a nerve and a neurone?
A neurone is a single nerve cell. A nerve is a bundle of the axons of many neurones.