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Homeostasis Overview
Descrição
Molecular Biology (Cells, Genetics) (Homeostasis) Mapa Mental sobre Homeostasis Overview, criado por Scott Harvey em 07-11-2018.
Sem etiquetas
homeostasis
medicine
veterinary medicine
feedback loops
physiology
molecular biology (cells, genetics)
homeostasis
Mapa Mental por
Scott Harvey
, atualizado more than 1 year ago
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Criado por
Scott Harvey
aproximadamente 6 anos atrás
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Homeostasis Overview
Negative feedback
Inhibits stimulus
Return to ideal
SET POINT
Maintenance of equilibrium
Change in variable
Detected by receptor
Processed in integration centre
Effector response
Return to....
Usually activated by autonomic nervous system
Normally in medulla
Transmitted by sensory neurones
EXAMPLES
High blood pressure
Reduced cardiac output
Vasodilation
Hyperglycaemia
Release of insulin
Positive feedback
Enhance stimulus
Divergence from equilibrium
EXAMPLES
Blood clotting
Platelets at clot release chemical to attract more platelets
Clot formed
Childbirth
Oxytocin released, stimulates contractions
Contractions stimulate release of more oxytocin
Continues until birth
Keeping vital parameters within narrow limits
Core body temperature
Heart rate
Blood pressure
Blood glucose
Osmolarity of plasma
Urine concentration
Rapid and efficient communication around body
Nervous system
Autonomic
Electrical communication
Endocrine system
Hormones
Chemical communication
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