B5

Question 1

What can be used as a replacement for the kidney?

Answer 1

Kidney dials is machines, used to filter the blood to people people with renal failure, removing urea and excess water and salts

Question 2

What other mechanical devices can be implanted into the body

Answer 2

Heart pacemaker
Artificial hearts
Eye lenses
Knee and hip joints

Question 3

What 4 things to doctors need to consider when designing implants?

Answer 3

Size, battery life, body reactions e.g. Don’t react with bodily fluid
Strength

Question 4

What things reduce the risk of rejection?

Answer 4

Tissue matching and immunosuppressant drugs

Question 5

Describe the structure of a long bone

Answer 5

Cartilage covers joints
Spongy tissue contains red bone marrow
Yellow bone marrow sorted fat
Compact bone tissue and periosteum, tough membrane converting outer surface of the bone

Question 6

What can be used as a replacement for the heart?

Answer 6

Lung machines, used during open heart surgery to divert blood from the heart