Homeostasis and Body Fluid Conpartments Flashcards Preview

Physiology 2130 > Homeostasis and Body Fluid Conpartments > Flashcards

Flashcards in Homeostasis and Body Fluid Conpartments Deck (16):
1

What is the definition of Physiology

Study of the normal functioning of a living organism and its components

2

What is the definition of Homeostasis

The ability of the body to maintain a relatively constant internal environment

3

What does homeostasis of the body include

It is a self regulating process involving all organs tissues and cells

4

What develops when the body fails to maintain homeostasis

Pathological conditions and disease develop

5

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

6

What is the definition of local control

When specialized cells
1. sense a change
2. take action that affects only the surrounding area where they are located

7

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

8

Why are negative feedback control systems important

They operate to maintain homeostasis
1. measure existing value of some factor
2. compare it to selected set point value
3. employ the difference of these 2 value to return the factor toward the set point value

9

What are the 4 systems that interact with the outside environment?

1. Respiratory
2. Digestive
3. Urinary
4. Reproductive

10

What is the average blood pH

7.38-7.42

11

What fluid surrounds our cells in the body

Interstitial fluid

12

What fluid is inside cells

Intracellular fluid

13

What is the Salty Banana

greater [Na+] outside of the cell
greater [K+] inside the cell

14

What are the 3 main functions of the cell membrane

1. Physical isolation
2. Regulation of exchange with the environment
3. Communication of the cell with its environment

15

What are water soluble substances

Ions
Glucose

16

What are fat soluble substances

O2
Alcohol
Steriod hormones