Homeostasis

Question 1

Define homeostasis

Answer 1

It is a process of keeping the internal body at an optimum level/set point

Question 2

What are three examples of homeostasis

Answer 2

Thermoregulation- Body temperature
Osmoregulation- Water content
Glucoregulation- Keeping blood concentration at a set point

Question 3

What happens when blood glucose level is too high

Answer 3

• Blood with too much glucose flows
• Insulin is secreted by the pancreas
• The glucose diffuses/moves from the blood into the liver and muscle cells which turns glucose into glycogen
• Insulin causes glucose to move from the blood into the cells to be used in aerobic respiration
• Blood glucose reduced

Question 4

What happens when blood glucose level is too low

Answer 4

• Blood with too little glucose flows.
• Glucagon is secreted by the pancreas
• Glucagon makes liver turn glycogen into glucose
• Glucose is released into the blood by the liver
• Blood glucose is increased

Question 5

How is type 1 diabetes caused?

Answer 5

It is caused when the pancreas produces little or no insulin.

Question 6

How do you treat type 1 diabetes?

Answer 6

• You have to inject insulin into the blood several times a day which makes sure glucose is removed from the blood quickly once food has been digested
• This stops the level of glucose in the blood from getting too high
• Diet
• Exercise

Question 7

How is type 2 diabetes caused?

Answer 7

• When a person becomes resistant to insulin (the body doesn’t respond to it which causes blood sugar level to rise at a dangerous level
• Overweight increases chances of type 2 diabetes
• Obesity is also a major factor

Question 8

How do you treat type 2 diabetes?

Answer 8

• Eating a healthy diet
• exercising regularly
• losing weight
• using drugs that improve the way that the body cells respond to insulin