Homeostasis

Question 1

Define Homeostasis

Answer 1

Homeostasis is the maintenance of a constant internal environment/ equilibrium

Question 2

4 homeostatic mechanisms

Answer 2

Blood glucose levels , Blood calcium levels , Thermoregulation , Osmolarity

Question 3

Correct order of command chain for Homeostasis

Effectors , Control centre , Receptors ,

Answer 3

Receptors, Control Centre , Effectors

Question 4

Two main body systems that work together to control homeostatic responses

Answer 4

Nervous system , Endocrine system

Question 5

Describe the receptors role

Answer 5

Detects changes , sends information to the control centre

Question 6

Describe the control centres role

Answer 6

sets the range for factors , evaluates input from the receptors & gives output commands , acts on nerve impulses or hormones

Question 7

Describe the effectors role

Answer 7

Receive output from control centre , creates a response/effect that changes the controlled condition. Usually muscle contractions , or gland secretions

Question 8

Define the term negative feedback

Answer 8

A response that slows or stops responses to maintain equilibrium

Question 9

Explain how the body uses homeostasis to manage blood glucose levels

Answer 9

If levels raise above (5.00mmol/L) ; The pancreas will secrete Insulin. Body cells will take in glucose for fuel , liver will convert glucose into Glycogen for storage.

If levels lower , Pancreas will secrete Glucagon . Which tells the liver to convert the glycogen back into glucose & release it back into the bloodstream.