Lesson 5: Homeostasis and Feedback Systems

Question 1

An organism’s process of maintaining a stable internal environment suitable for sustaining life

Answer 1

Homeostasis

Question 2

The normal value of a controlled condition

Answer 2

Set point

Question 3

The normal range of values of a controlled condition

Answer 3

Set ranges

Question 4

The upper and lower values of the range of a set point

Answer 4

Normal limits

Question 5

A kind of monitoring and responding mechanism to changes in the condition of the body, such as blood glucose levels, temperature, or blood pressure

Answer 5

Feedback systems

Question 6

A system that keeps repeating its signals till the controlled condition is brought back to within the normal limits of its set point range (ex. thermoregulation, shivering of the body in cold temp, sweating during extreme summer, regulation of blood sugar)

Answer 6

Negative feedback system

Question 7

A system that repeats its feedback until the original stimulus is removed (ex. increasing uterine contraction once labor starts and clotting of blood following an injury)

Answer 7

Positive feedback system

Question 8

When equilibrium of the internal environment is disturbed within the body

Answer 8

Homeostatic imbalance