Homeostasis

Question 1

What is homeostasis ?

Answer 1

Regulation and maintenance of the internal environment

It maintains
-temperature
-pH
-water levels
-concentration of molecules (glucose/salt )

Question 2

What is feedback mechanism ?

Answer 2

A control mechanism that detects variations internal conditions and the body’s response to them

A feedback compares current conditions to set ranges

Question 3

What are the three components to the feedback mechanisms

Answer 3

1. Sensory /receptor (stimulus-change in internal environment)
2. Control center (brain )
3. Effector (muscles or glands )

Question 4

What are the two kinds of feedback mechanisms ?

Answer 4

Positive and negative

Question 5

Increased change away from set points

E.g, blood clotting and child birth

Answer 5

Positive feedback loop

Question 6

Counteracts change to conditions above it below set point

E.g., eating

Answer 6

Negative feedback loop