Homeostasis

Question 1

What is homeostasis?

Answer 1

The body’s ability to keep its internal environment relatively stable despite external changes

Question 2

Why is homeostasis important?

Answer 2

Outside physiological ranges, cellular functioning is disturbed leading to illness or pathological conditions

Question 3

What are some factors kept in homeostasis?

Answer 3

Level of nutrients: glucose, amino acids, fatty acids, the vitamins
Level of waste products: urea, creatinine, uric acids
Electrolyte concentration: Na+, K+, Ca++
Water Content
Level of different hormones
pH
Gas levels: O2, CO2
Temperature
Pressure

Question 4

What are the components of a homeostatic control system?

Answer 4

Receptors
Integrating System
Effectors

Question 5

What is the function of receptors

Answer 5

To detect the change (disturbance)

Question 6

Integrating centers

Answer 6

To compare with the set point & generate the signals necessary for correction of the error

Question 7

Effectors

Answer 7

Respond to signals from the center to correct the error