Homeostasis (OCR GCSE Biology A, Combined (Gateway Science Suite)): Flashcards
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Define homeostasis
Define homeostasis
Maintenance of a constant internal environment despite changes
Why is homeostasis needed?
Why is homeostasis needed?
For enzyme action and all cell functions
What homeostasis controls in humans
What homeostasis controls in humans
Blood glucose, body temp, water levels
Types of communication in control systems
Types of communication in control systems
Nervous and hormonal
What receptors do
What receptors do
Detect stimuli (changes in environment)
Role of coordination centres
Role of coordination centres
Process information from receptors
Examples of coordination centres
Examples of coordination centres
Brain, spinal cord, pancreas
Role of effectors
Role of effectors
Bring about responses to restore optimum levels
Examples of effectors
Examples of effectors
Muscles or glands
Components of all control systems
Components of all control systems
Receptors, coordination centres, effectors