Explain how the endocrine system can malfunction

/in /by

Explain how the endocrine system can malfunction. You may wish to use diagrams to support this piece of work.
Research the following conditions:
1) Goitre
2) Cushing’s Syndrome
3) Diabetes Mellitus
4) Pituitary Dwarfism
For each you need to explain:
a) What is the cause? Which hormones are involved?
b) What are the normal / healthy levels of these hormones in the blood?
c) How are these levels measured?
d) What are the symptoms of each disease and how do they come about?