Urea, water and ions.

It makes the liver convert glycogen to glucose. This causes the blood glucose level to increase.

Muscles or glands that bring about a response.

Near the hypothalamus, monitors the temperature of blood.

The blood vessels supplying the skin dilate (widen). This helps to transfer energy to the environment.

When the pancreas produces little or no insulin.

Neurones that carry impulses from the sensory neurone to the motor neurone.

Kidney transplants are a cure, but they can be rejected. Patients are treated with immunosuppressants. People are not always on the donor list, relati...

It kills or disables the sperm.

Contact lenses, laser eye surgery and replacement lens surgery.

Stimulates the ripening of fruit.

IVF leads to unused embryos which are destroyed or used for medical research. (Potential life).Genetic testing could be carried out on the embryo whic...