What homeostasis is, why stable temperature, pH and blood glucose matter, and how negative and positive feedback control the internal environment.
Interactive simulation of negative feedback in blood glucose control
How insulin, glucagon and adrenaline control blood glucose, the second messenger model, and the causes and treatment of type I and II diabetes.
How a nerve impulse crosses a cholinergic synapse and a neuromuscular junction, including summation, inhibition and the effects of drugs.
How skeletal muscle contracts: sarcomere structure, the sliding filament theory, roles of calcium, ATP and phosphocreatine, and fibre types.
Learn how a resting potential is maintained, how an action potential is generated and passed along an axon, and what affects conduction speed.
How the kidney filters blood and controls its water potential: ultrafiltration, selective reabsorption, the loop of Henle and the role of ADH.
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