What you’ll learn8 learning objectivesChoose one objective for a focused lesson, or study the complete topic.14.4.1Homeostasis as the maintenance• Describe homeostasis as the maintenance of a constant internal environmentSyllabus objective14.4.2Insulin decreases blood glucose• State that insulin decreases blood glucose concentrationSyllabus objective14.4.3Concept of homeostatic control• Explain the concept of homeostatic control by negative feedback with reference to a set pointSyllabus objective14.4.4Control of blood glucose concentration• Describe the control of blood glucose concentration by the liver and the roles of insulin and glucagonSyllabus objective14.4.5Treatment of Type 1 diabetes• Outline the treatment of Type 1 diabetesSyllabus objective14.4.6Of the skin: hairs, hair erector• Identify in diagrams and images of the skin: hairs, hair erector muscles, sweat glands, receptors, sensory neurones, blood vessels and fatty tissueSyllabus objective14.4.7Maintenance of a constant internal• Describe the maintenance of a constant internal body temperature in mammals in terms of: insulation, sweating, shivering and the role of the brainSyllabus objective14.4.8Maintenance of a constant internal• Describe the maintenance of a constant internal body temperature in mammals in terms of vasodilation and vasoconstriction of arterioles supplying skin surface capillariesSyllabus objective