8.1 Kahoot - exam Flashcards
homeostasis is the ability of the body to maintain a ____ ______ _____.
stable internal environment
what are the 3 components of the feedback system
receptor, control center, effector
what is the purpose of a sensor/receptor in a feedback mechanism
to detect change in the internal environment
what is the purpose of a control center in a feedback mechanism?
to initiate a response to a stimulus
what is the purpose of an effector in a feedback mechanism
to produce a response to a stimulus
what are the consequences of homeostatic imbalance in the body
disease and illness
examples of homeostasis in human body?
- regulation of blood pressure
- regulation of body temperature
- regulation of blood glucose levels
negative feedback systems…
return the body to a steady state
positive feedback systems…
enhanced and increases the initial stimulus
examples of negative feedback
- shivering when cold
- releasing insulin when sugar levels are low
- sweating when hot
- blood pressure regulation
- body temp regulation
- pH of blood
example of positive feedback
- a fever
- childbirth
what feedback system is the most common
negative
what is the purpose of a feedback mechanism in homeostasis
to detect changes in the internal environment and initiate a response