8.2 How the nervous system works The nervous system The nervous system is the network of nerve cells and fibres that transmits impulses around the body. The nervous system is divided into the central and peripheral nervous systems. Central nervous...
8.3 Brains and behaviour The human brain The brain is part of the CNS, its role is to initiate and coordinate activities of the body. It receives input from receptors inside and outside the body, and the information from these is integrated to produce appropriate...
8.4 Brains, the genome and medicine Neurotransmitters in the brain The brain contains neurones, which transmit nerve impulses to each other across synapses. Many different neurotransmitters are involved, including dopamine and serotonin. Dopamine and...
Topic 8: Grey matter 8.1 Sensitivity in plants Photoreceptors: A structure in living organisms, especially a sensory cell or sense organ that responds to light. Coordination: The interaction of cells enables them to coordinate their activities appropriately....