OCR•A-Level•Biology
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Communication and Homeostasis
Nervous system, hormones, and homeostasis
Practice 53 subtopics in Communication and Homeostasis. All questions match the OCR A-Level specification.
About Communication and Homeostasis
Communication and Homeostasis is a key topic in the OCR A-Level Biologyspecification. This topic covers nervous system, hormones, and homeostasis.
Master all 53 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
All Subtopics (53)
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Need for communicationCell signallingHomeostasis definitionNegative feedbackPositive feedbackNervous system structureSensory neuronesMotor neuronesRelay neuronesReceptorsPacinian corpuscleResting potentialAction potentialDepolarisationRepolarisationRefractory periodSaltatory conductionFactors affecting conductionSynapsesSynaptic transmissionNeurotransmittersAcetylcholineSummationPAG 10: Nervous tissue dissectionEndocrine systemHormonesAdrenal glandsAdrenalinePancreasIslets of LangerhansBlood glucose regulationInsulinGlucagonSecond messengersDiabetes mellitusType 1 diabetesType 2 diabetesExcretion definitionLiver structureLiver functionsOrnithine cycleKidney structureNephronUltrafiltrationSelective reabsorptionLoop of HenleCounter-current multiplierOsmoregulationADHWater potential controlKidney failureDialysisKidney transplant
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