homeostasis
- Created by: hbennett01
- Created on: 27-09-20 22:45
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- homeostasis
- what can it control
- temperature
- If temp were allowed to rise out of control protein and therefore enzyme structure would be affected
- amount of water in the body
- the levels of water can affect metabolism and osmosis
- amount of glucose in the body
- can affect osmosis and the rate of respiration
- amount of nitrogenous waste in the body
- nitrogenous waste can become toxic in the body
- temperature
- the control system for regulation of homeostasis is an open system
- any deviation from reference point actives the control system
- control system = A feedback mechanism
- two forms of feedback mechanisms
- Negative feedback
- occurs when the product of the reaction leads to a decrease in that reaction. which is then brought back to a steady, stable state
- Positive feedback
- when a high level of something triggers the body to increase it even further e.g childbirth
- Negative feedback
- two forms of feedback mechanisms
- control system/ homeostasis regulation: 5 basic components
- 1. stimulus - physical, chemical, environmental factor/ disturbance that causes deviation of normal body's environment
- 2. receptor (sensor) - receives 1. and forwards to the control centre - neurons
- 3. control centre- receives and processes info from the receptor e.g Brain or Hypothalamus
- 4. Effector - responds to the 1. e.g Glands, muscles
- 5. Response - a corrective measure towards the disturbance. it can oppose or enhance the 1.
- The maintenance of a constant state within the body
- what can it control
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