Homeostasis

Question 1

Name the survival needs…

Answer 1

Nutrition 
Oxygen
Water
Maintenance of body temperature 
Maintenance of pressures

Question 2

Define homeostasis

Answer 2

The ability to maintain a stable internal environment dislike changes to the external environment

Question 3

Give the order of the control mechanisms

Answer 3

Stimulus 
Receptor 
Control centre 
Effector 
Homeostasis restored

Question 4

Define negative feedback

Answer 4

Output of the system shuts off the original stimulus and then the mechanism causes a change in the opposite direction

Question 5

Examples of homeostasis

Answer 5

Blood sugar levels 
Blood levels of calcium and sodium 
Body temperature 
Blood pressure 
Ph of blood and other tissues

Question 6

Examples of heat transfer

Answer 6

Radiation
Convection
Conduction
Evaporation

Question 7

To cool the body down it…

Answer 7

Perspires
Blood moves peripherally
Loose clothing
Movement of air

Question 8

To heat the body up…

Answer 8

Blood moves away from periphery
Shivering
Layers of thin clothing
Increased activity

Question 9

Stages of blood sugar control…

Answer 9

Blood sugar goes up
Detected by the pancreas
Sugar enters blood and cells
Glucose is converted to glycogen

Question 10

Examples of positive feedback

Answer 10

Blood clotting
Childbirth
Lactation