Zusammenfassung der Ressource
Homeostasis
- + Positive
Feedback
- Enhance
stimulus
- E.g. Child birth & blood clotting
- - Negative
Feedback
- Reverse
stimulus
- E.g. Maintaining body temp & blood glucose levels
- Stimulus
- Receptor
- Control centre
- Effector
- Physiological response
- Evaporation of sweat, body temp falls, stimulus ends
- Responds to change
- E.g. Sweat glands activated
- Efferent
pathway
- Info sent from control centre to effector
- Measures change against set point
- E.g. Thermoregulatory centre in brain
- Afferent pathway
- Info sent from receptor to control centre
- Detects change
- E.g. Temp-sensitive cells in skin & brain
- Produces change
- E.g. Body temp rises
- Maintain
balance
- Optimal
functioning
- Internal
environment