Homeostasis and Body Fluid Conpartments Flashcards
What is the definition of Physiology
Study of the normal functioning of a living organism and its components
What is the definition of Homeostasis
The ability of the body to maintain a relatively constant internal environment
What does homeostasis of the body include
It is a self regulating process involving all organs tissues and cells
What develops when the body fails to maintain homeostasis
Pathological conditions and disease develop
How does the body maintain homeostasis
Body needs to be able to
1. detect
2. respond
to changes in its internal environment to keep it in an acceptable range
What is the definition of local control
When specialized cells
- sense a change
- take action that affects only the surrounding area where they are located
What is the definition of long distance control
Since everything is so far away, long distance control is regulated by feedback loops to keep the body at or near a certain point
Why are negative feedback control systems important
They operate to maintain homeostasis
- measure existing value of some factor
- compare it to selected set point value
- employ the difference of these 2 value to return the factor toward the set point value
What are the 4 systems that interact with the outside environment?
- Respiratory
- Digestive
- Urinary
- Reproductive
What is the average blood pH
7.38-7.42
What fluid surrounds our cells in the body
Interstitial fluid
What fluid is inside cells
Intracellular fluid
What is the Salty Banana
greater [Na+] outside of the cell
greater [K+] inside the cell
What are the 3 main functions of the cell membrane
- Physical isolation
- Regulation of exchange with the environment
- Communication of the cell with its environment
What are water soluble substances
Ions
Glucose
