Homeostasis

Question 1

What 2 things is homeostasis about

Answer 1

Keeping the right balances in the body and removing waste

Question 2

What are the 4 things the body needs to keep the same

Answer 2

Body Temperature
Iron content
Water content
Blood glucose concentration

Question 3

Why is the removal of waste key in the body

Answer 3

The body cannot cope with high concentrations of waste products as it could damage cells and chemical reactions in the body

Question 4

What are the 2 waste products released by the body

Answer 4

Water

Carbon dioxide

Question 5

Why does the body need to remove waste water

Answer 5

Too much (or too little) can damage cells

Question 6

What organ deals with waste water in the body

Answer 6

Kidneys

Question 7

How does the kidneys deal with waste water in the blood plasma

Answer 7

Produces a larger volume of urine which is also more dilute

Question 8

Where is water in the body found

Answer 8

Blood plasma

Question 9

Name 4 ways water is lost from the body

Answer 9

Urine
Sweating
Faeces
Respiration

Question 10

What function does the kidneys have in the body

Answer 10

Filtering out small molecules from the blood

Question 11

What 4 molecules in the body does the kidneys filter out

Answer 11

Water
Salts
Urea
Glucose

Question 12

How do we get urine

Answer 12

When the kidneys filter the 4 molecules out, it takes in all the glucose and the needed water and salts leaving urea plus left over salts/water which make urine

Question 13

What is urine

Answer 13

Left over salts, left over water and urea filtered out of the body by the kidneys

Question 14

What does dilute urine mean

Answer 14

That the kidneys have filtered most of the salts and water out of the body

Question 15

What does concentrated urine mean

Answer 15

That the water levels in blood plasma is low

Question 16

What 3 things does the change in urine concentration depend on?

Answer 16

External temperature
Intake of fluids and salts
Exercise

Question 17

What are the 2 functions of sweating

Answer 17

Cool the body down

Water loss

Question 18

Why do our hands and feet feel the cold first

Answer 18

The body is trying to maintain core temperature

Question 19

What part of the body requires a constant supply of blood glucose

Answer 19

Body cells

Question 20

What monitors the levels of blood glucose in the body

Answer 20

Pancreas

Question 21

How does the body control the concentration of blood glucose in the body

Answer 21

Produces insulin

Question 22

How does the pancreas react if the concentration of blood glucose in the blood is too high

Answer 22

It increases the level of insulin so that the amount of blood glucose being transferred to cells increases, ultimately reducing blood glucose levels in the blood

Question 23

How does the pancreas react if the concentration of blood glucose in the blood is too low

Answer 23

It decreases the level of insulin so that the amount of blood glucose being transferred to cells is reduced, ultimately increasing blood glucose levels in the blood

Question 24

What does the production of insulin in the pancreas do

Answer 24

Causes blood glucose to move into cells

Question 25

What is specific about people with diabetes

Answer 25

They cannot control their blood glucose level - this can be fatal

Question 26

What is type 1 diabetes

Answer 26

When the body does not produce enough insulin

Question 27

How can type 1 diabetes be treated

2 ways

Answer 27

By paying careful attention to diet

Regularly injecting insulin into the body

Question 28

What is type 2 diabetes

Answer 28

The result of a poor diet

Question 29

How can you treat type 2 diabetes

2 ways

Answer 29

Watching diet

Exercising

Question 30

Explain what happens when the pancreas detects too much glucose in the blood

Answer 30

Releases insulin
Insulin converts glucose to glycogen
Glycogen gets stored in the liver and muscles