I am studying medicen so I can help out in a hospital
Me too! I work at many hospitals and a whole range of departments such as E.R., My job is tough. 
What other departments are in a hospital. They seem so big.
There is usually a main emergency department thats usually found int he main side of a hospital or other primary care center. Most of the rooms and patient area is further in the back. 
I see. I have also heard there are hospitals just for woman and children?
Yes such as St Judes which is just for children, Ive visited many of them in my days. I'm not too sure about wemon only hospitals though. 
I understand now. When did the first hospitals become a thing?
only constitutes 10% of income of hospitals. "(need citation here. Chinese sources seem conflicted about the for-profit/non-profit ratio of hospitals in China)"
Specialised hospitals can help reduce health care costs compared to general hospitals. For example, Narayana Health's Bangalore cardiac unit, which is specialised in cardiac surgery, allows for significantly greater number of patients. It has 3000 beds (more than 20 times the average American hospital) and in pediatric heart surgery alone, it performs 3000 heart operations
regardless of which station it belongs to. This will allow to provide timely medical care even with limited resources.
Introduction of emergency departments.
An emergency department (ED) is a medical treatment facility specializing in emergency medicine, the acute care of patients who present without prior appointment; either by their own means or by that of an ambulance. The emergency department is usually found in a hospital or other primary care center.
Currently, most hospitals in Ukraine have reception departments (, ). There are usually no