Homeostasis

Question 1

Define homeostasis

Answer 1

Homeostasis is a steady state condition where the body’s internal environment remains relatively constant within narrow physiological limits despite significant changes in the external environment

Question 2

What is internal environment?

Answer 2

The immediate surroundings of the body cells which provides cells with the medium they need to live

Question 3

Examples for internal environment of the body?

Answer 3

Interstitial fluid
Blood

Question 4

What does homeostasis help maintain?

Answer 4

• a fairly constant temperature
• blood pH
• blood glucose
• blood osmolality

Question 5

Homeostatic control systems in the body depends on?

Answer 5

Negative feedback mechanisms

Question 6

How is homeostasis achieved?

Answer 6

Maintaing a variable at or near a particular value (set point)

Fluctuation of the variable above or below the set point serves as the stimulus detected by the sensor (detector)

When a signal is received from the sensor, a control center generates output that triggers a response

Question 7

What is a response?

Answer 7

A physiological activity that helps return the variable towards the set point level

Question 8

What is normal body temperature?

Answer 8

Around 37°c