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A Level Biology

The Nervous System

Sensory Neurones, Motor Neurones and Relay Neurones
The Resting Potential
The Pacinian Corpuscle
Rod Cells and Cone Cells as Light Receptors
The Action Potential and the All-or-Nothing Principle
Transmission of an Action Potential along a Non-myelinated Axon
Saltatory Conduction
Synaptic Transmission
Temporal and Spatial Summation
Inhibitory Synapses
Organisation of the Nervous System thumbnail
reflex actions thumbnail
Skeletal Muscle, Cardiac Muscle and Involuntary (Smooth) Muscle thumbnail
Control of the Heart Rate thumbnail
Myofibrils, Actin and Myosin thumbnail
The Neuromuscular Junction thumbnail
The Sliding Filament Mechanism of Muscle Contraction thumbnail
Slow-twitch and Fast-twitch Muscle Fibres thumbnail