Osmoregulation and Glucose Concentration (COMMUNICATION) 2.0 / 5 based on 1 rating ? BiologyHealth, illness and diseaseA2/A-levelOCR Created by: Paige RobinsonCreated on: 19-12-12 09:39 What is a definition of Osmoregulation? The process to maintain correct water potentials in the body for homeostatis (controlled by Hypothalmus) 1 of 6 What happens with lack of water in tissues? Water moves out of cells by OSMOSIS causing CREDATION. Collecting duct becomes more permeable with LESS ADH released. Metabolic reactions decrease 2 of 6 What happens with excess water in tissues? Water moves into cells by OSMOSIS causing LYSIS. Collecting duct becomes less permeable with MORE ADH released 3 of 6 What is glucose concentration and what controls it? The control of the amount of glucose in the bloodstream and cells, controlled by the liver with either insulin or glucagon hormones 4 of 6 What happens if glocose concentration low? respiration slows down so not enough energy. Glycogen released and turned into glucose by glucagon 5 of 6 What happens if glucose concentration high? water moves out of cells by osmosis as water potential is low. Respiration holds again so no energy. Glucose turned into glycogen by insulin 6 of 6
A2 OCR Biology Key Terms and Definitions Cell Communication and Homeostasis 3.5 / 5 based on 2 ratings
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