Homeostasis Flashcards
What is homeostasis?
The regulation of the body to maintain internal balances.
What are some of the things homeostasis regulates?
Homeostasis regulates temperature, pH, glucose, energy, ketones, waste, nutrients, electrolytes, hormones, neurotransmitters, etc.
What is negative feedback?
Negative feedback is reducing changes away from a set point.
What is positive feedback?
Positive feedback is increasing changes until a specific function is over.
What are some examples of negative feedback?
Increasing insulin to lower blood glucose. Sweating to cool down. Shivering to warm up.
What are some examples of positive feedback?
Releasing oxytocin during labor. Child feeding stimulates milk production.
What are receptors?
Sensory cells which detect certain levels of body functions.
What are some levels receptors detect?
Temperature, heart rate, pH, blood pressure, glucose.
Where do receptors send information
To the integrators.
What do integrators do?
Integrators process the input levels of body functions and determine whether a change needs to be made.
Where does the response sent by integrators get sent?
To the effectors.
Where are integrators located?
In the central nervous system.
What are effectors?
Organs which effect the change of body level functions.
What are examples of effectors?
Muscles, glands, and fat tissues.
What are the two different types of responses?
Controlled and Uncontrolled.
What does gas exchange do?
Regulates your CO2 levels.
If your CO2 levels are too high what happens?
Your breathing and heart rate go up.
If your CO2 levels are too low what happens?
Your breathing and heart rate decrease.
What do enzymes do once secreted?
Once enzymes are secreted they break down food from polymers to monomers.
What type of breakdown is chewing?
A mechanical breakdown.
What happens when there are microbe infections?
The activity of body defense systems increase until the infection is cleared out.
What is an example of how the body deals with microbe infection?
Increasing the body temperature (A fever) which reduces microbe growth.
What is hormesis?
Hormesis is when the body is stressed due to being inbalanced
What happens when your body is in hormesis?
Positive and negative feedback are induced until the body is balanced again.
