Principles Of Homeostasis

Question 1

What is homeostasis?

Answer 1

Set of processes where the body tries to maintain a constant internal environment

Regulation of the fluid surrounding cells (extracellular fluid)

Question 2

What is the internal environment?

Answer 2

Fluid surrounding cells

Question 3

What are the 2 major elements of the internal environments?

Answer 3

1) interstitial fluid (tf)

2) blood plasma

Question 4

What is interstitial fluid?

Answer 4

Fluid leaving blood capillaries to bathe the cells, bringing oxygen and nutrients

Fluid returns to blood with wastes- carbon dioxide from cellular metabolism

Question 5

What is blood plasma?

Answer 5

Fluid surrounding the blood cells

Question 6

What makes up the feedback loop?

Answer 6

1) receptors
2) controller
3) effectors

Question 7

What 2 systems control homeostatic mechanisms?

Answer 7

1) nervous system

2) endocrine system

Question 8

What is negative feedback?

Answer 8

Response to a change in the internal environment

Automatic response

Involves corrective mechanism, reversing the original change and bringing the variable/factor within the internal environment back to normal