The Figure shows a motor neurone.
Figure

Use words from the list to name part P and part Q.
axon cell body dendrite myelin sheath receptor
A motor neurone carries impulses from the central nervous system to an effector.
Give one example of an effector.
State the function of part Q.
135 exam-style questions on OCR GCSE Biology 3.1 Coordination and control – the nervous system, covering 3.1.1 Structure of the nervous system, 3.1.2 Coordinated response, 3.1.3 The reflex arc, 3.1.4 Structure of the eye, 3.1.5 Defects of the eye, 3.1.6 Structure and function of the brain, 3.1.7 Difficulties of investigating brain function, and 3.1.8 Limitations in treating nervous system damage. Each one has a worked solution and a mark scheme showing where the marks go.