5.1 - Communication + Homeostasis 4.0 / 5 based on 1 rating ? BiologyCommunication and HomeostasisA2/A-levelOCR Created by: TobyHill5Created on: 02-07-18 20:01 A good communication system should NOT .... be able to secrete ADH 1 of 24 Nervous system a network of neurons that signal to each other across synaptic junctions 2 of 24 enable rapid responses neuronal system 3 of 24 enables long-term responses hormonal system 4 of 24 peripheral receptors are found on the ______ of the body surface 5 of 24 central receptors detect changes to the ________ environment internal 6 of 24 negative feedback involves ________ a change reversing 7 of 24 receptors detect a stimulus and send an ______ to the coordination centre input 8 of 24 in -ve feedback, receptors detect the change back towards the normal conditions and _______ the input reduce 9 of 24 in positive feedback, the response is to ______ the change increase 10 of 24 an organism that relies on external sources of heat to maintain body temperature ectotherm 11 of 24 endotherm an organism that uses heat from metabolic reactions to maintain body temperature 12 of 24 organisms that are able to maintain a constant body temperature endotherms 13 of 24 to WARM UP, an ectotherm..... moves into the sun, lies on a warm surface, exposes a larger surface area to the sun 14 of 24 the part of the brain that coordinates homeostatic responses hypothalamus 15 of 24 organisms that use physiological adaptations (not behavioural) to adapt to temperature changes endotherms 16 of 24 reactions that release energy in the form of heat exergonic 17 of 24 sphincters bands of muscle on the arterioles, contract to control lumen of arterioles 18 of 24 receptors in _____ detect changes in internal body temperature hypothalamus 19 of 24 fast responses travel via the ________ system nervous 20 of 24 to warm up, the hypothalamus causes....... all 3 21 of 24 endotherms can cool down via...... vasodilation 22 of 24 the process of smooth muscle in the blood vessel walls dilating is........... vasodilation 23 of 24 ______ _____ muscles contract to raise the hairs on the skin erector pili 24 of 24
A2 Biology Communication, Homeostasis and Energy (OCR F214) 5.0 / 5 based on 1 rating Teacher recommended
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