Homeostasis Keyword Definition

"Homeo-" is a word part that means...

• Same/Similar

• Body/Physical

• Rest/Unmoving

• Live/Sleep

"Stasis" is a root word that means

• Stable/Equal

• Related/Family

• Supported/Strong

• Life/Alive

Homeostasis is the maintenance of the internal environment in the body of an organism to be in a _____ and _____ condition.

• balanced , stable

• unbalanced , volatile

Examples of internal environment in an organism

• temperature

• hormone

• pH

• water content

• volume of blood

A stimulus is...

• A change in something - either coming from inside or outside.

• A behavior that occurs when something needs to be changed

• An action that excites or increases the intensity of something

• An event that secures and stabilizes an organism

A response is...

• An even that occurs when an organism feels at rest and stable.

• A behavior/change that occurs because of a stimulus.

• A change in an organism from either the inside or the outside.

• The way that an organism can end a positive feedback loop.

_____ is a physiological response or mechanism involved in maintaining the stable internal environment.

(Hint: N_______ f_______)

(a)