Principles Of Homeostasis

Question 0

What is homeostasis?

Answer 0

The maintenance of a constant internal environment

Question 1

By maintaining a relatively constant internal environment for their cells, what can organisms limit?

Answer 1

The external changes these cells experience

Question 2

What is the internal environment made up of?

Answer 2

Tissue fluids that bathe each cell, supplying nutrients and removing waste

Question 3

What does homeostasis aim to maintain?

Answer 3

Maintaining the chemical make-up, volume and other features of blood and tissue fluid within restricted limits

Question 4

What does homeostasis ensure?

Answer 4

That cells of the body are in an environment that meets their needs and allows them to function normally despite external changes

Question 5

Homeostasis is essential for the proper functioning of organisms for what 4 reasons?

Answer 5

To allow enzyme reactions to take place at a constant and predictable rate, to prevent changes to the water potential that cause damage to the body’s cells, to maintain a constant blood glucose concentration to ensure a reliable source of glucose for respiration and to provide organisms with the ability to maintain a constant internal environment

Question 6

The control of any self-regulating system involves a series of 5 stages. What are these stages?

Answer 6

The set point, receptor, controller, effector and the feedback loop