The human body utilizes complex homeostatic systems to maintain stable internal conditions despite fluctuating external environments.
(i) State the biological term used to describe the maintenance of a constant internal environment.
(ii) State the specific term given to the physiological regulation of body temperature.
A researcher working in an Arctic field station is exposed to sub-zero temperatures, causing a drop in their core body temperature.
Explain how the human body detects this temperature decrease and the physiological mechanisms coordinated to restore it to the normal set-point.
The coordination of homeostatic responses involves both nervous and endocrine (hormonal) systems.
State three differences between communication by nerves and communication by hormones.
26 exam-style questions on Edexcel IGCSE Biology Co-ordination and response. Each one has a worked solution and a mark scheme showing where the marks go.