AQA GCSE Combined Science Biology - Paper 2

• What is a Synapses ?


  Is where two neurones join together.
• What is the process of CNS ?

  Stimulus - Receptor - Sensory Neurone - CNS - Motor Neurone - Effector - Response.
• Examples of Effectors ?

  Muscles and glands.
• What does Effectors responded to ?

  Electrical impulses and bring about to a change.
• Examples of Receptors ?

  Receptor in the ear detect sound.
• What are Receptors ?

  Cells that detect stimuli.
• What are Motor Neutrons ?


  These carry electrical impulses from the CNS to effectors.
• What is are Sensory Neurones ?

  These carry information as electrical impulses from the receptor to the CNS.
• What is the CNS connected to ?

  the body by sensory neurones and motor neutrons.
• What does the Central Nervous System (CNS) consist of ?


  brain and spinal cord.
• What does the nervous system mean ?

  that humans react to their surroundings and coordinate their behaviour.
• What happens in the blood glucose level is too low ?

  the control system increases the level.
• What happens in the blood glucose level is too high ?

  the control system decreases the level.
• What does the control system ?

  keeps the conditions in your body steady.
• What is homeostasis ?

  keeping conditions inside your body.