Anatomy and basic physiology of the system

Your initial post must be a minimum of 500 words. In addition to the textbook, utilize a minimum of two scholarly sources to support your points. Cite and reference your sources in APA format as outlined in the Ashford Writing Center.

Your initial post must:

Describe the anatomy and basic physiology of the system.
Articulate what makes the system unique/primary focus.
Include an interesting fact about the system, that is not in the textbook. (For example, the heart can secrete hormones but it is not part of the Endocrine system)
Choose a common disorder of the system and describe the:
disease/condition
symptoms and signs
etiology
common tests/procedures for confirming the condition.
treatment options
prognosis
Include a summary paragraph (of at least 200 words) identifying how this system supports one other body system to help maintain homeostasis. For example, what is the relationship between the muscular system and the skeletal system?