Topics
- Understanding how organisms are able to respond to changes in their environment
- Understanding that a coordinated response requires a stimulus, a receptor and an effector
- Describing how nervous and hormonal communication control responses and understand the differences between the two systems
- Understanding that the central nervous system consists of the brain and spinal cord and is linked to sense organs by nerves
- Understanding that stimulation of receptors in the sense organs sends electrical impulses along nerves into and out of the central nervous system, resulting in rapid responses
- Understanding the role of neurotransmitters at synapses
- Describing the structure and functioning of a simple reflex arc illustrated by the withdrawal of a finger from a hot object Describe the structure and function of the eye as a receptor
- Understanding the function of the eye in focusing near and distant objects, and in responding to changes in light intensity
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