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      Lesson details

      Learning outcome

      I can describe the parts that make up the human nervous system that enables us to sense and respond to changes.

      Key learning points

      1. The human body has a nervous system that enables us to sense and respond quickly to changes outside and inside the body.
      2. Examples of stimulus (e.g. increase in temperature) and response (e.g. sweating).
      3. The structures that make up the central nervous system (CNS) and peripheral nervous system (PNS).
      4. Receptors detect stimuli; they can be single cells (e.g. in the skin) or groups of cells in sense organs (e.g. the eye).
      5. Sensory neurones join receptors to the CNS; motor neurones join the CNS to effectors that carry out the response.

      Keywords

      • Nervous system - Detects and coordinates a response to changes in internal or external environment.

      • Receptor - Senses a change in the environment, such as a change in light or temperature.

      • Stimulus - The change in the environment, such as a sound, touch or light.

      • Neurone - A nerve cell which transmits electrical impulses between different parts of the body.

      • Effector - A muscle or gland which carries out a response.

      Common misconception

      There are multiple misunderstandings about the nervous system, including the order and function of neurones, the roles of the stimulus, receptor and effector, and the central and peripheral parts.

      The pathway through the nervous system is built up with examples and demonstrated as a flowchart. The roles of the different parts is explained and practised, and distinctions are made between the central and peripheral parts.

      Teacher tip

      Encourage students to think about the nervous system in real terms by describing how their body is responding to stimuli such as a pencil or an instruction. The flowchart could be simulated using a chain of students representing each part.

      Equipment

      None required.

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      True or false? Humans are unicellular.

      true
      Correct answer: false

      Q2.
      Match the organ to its sense.

      Correct Answer:taste,tongue

      tongue

      Correct Answer:smell,nose

      nose

      Correct Answer:touch,skin

      skin

      Correct Answer:eyes,light

      light

      Q3.
      Match the tissue to its function.

      Correct Answer:muscle,contract and relax to bring about movement

      contract and relax to bring about movement

      Correct Answer:fat,provide energy and insulation

      provide energy and insulation

      Correct Answer:nerve,transmit electrical impulses

      transmit electrical impulses

      Q4.
      Starting with the smallest, put these levels of organisation in order.

      1 - cell
      2 - tissue
      3 - organ
      4 - organ system

      Q5.
      Who is correct?

      Sam: Specialised cells are only found in animals.
      Correct answer: Laura: Specialised cells have features that help them do their job.
      Lucas: Specialised cells are only found in plants, like the root hair cell.
      Jacob: Specialised cells are important and we need more of them.

      Q6.
      What is the role of the nervous system?

      Correct answer: to transport messages around the body quickly
      to excrete waste products
      to absorb products from our surroundings

      6 Questions

      Q1.
      What are the two main sections of the nervous sytem?

      inner
      Correct answer: central
      brain
      outer
      Correct answer: peripheral

      Q2.
      Match the part of the nervous system to its description.

      Correct Answer:brain,processes messages and coordinates responses

      processes messages and coordinates responses

      Correct Answer:spinal cord,dense column of nerve cells that connects the PNS and CNS

      dense column of nerve cells that connects the PNS and CNS

      Correct Answer:neurones,transmits electrical impulses between different parts of the body

      transmits electrical impulses between different parts of the body

      Correct Answer:sensory receptors,detect changes in the environment

      detect changes in the environment

      Q3.
      Which of these are responses?

      Correct answer: sweating
      Correct answer: muscle contraction
      change in temperature
      pain

      Q4.
      True or false? Receptors are made of cells.

      Correct answer: true
      false

      Q5.
      Put these in order to show the path of a message through the nervous system.

      1 - sensory receptor
      2 - sensory neurone
      3 - relay neurones in CNS
      4 - motor neurone
      5 - effector

      Q6.
      Match the stimuli to the response.

      Correct Answer:hot object,move body part away

      move body part away

      Correct Answer:hot environment,sweating

      sweating

      Correct Answer:bright light,pupils narrow

      pupils narrow

      Correct Answer:increase in blood sugar level,release insulin

      release insulin


      To help you plan your 10 combined science lesson on: The human nervous system, download all teaching resources for free and adapt to suit your pupils' needs...