Misc: what's the main ingredient in glass?

Questions

Medicine : A medicine that hastens the emptying of the bowels is called a ________.?

Medicine : A non-cancerous tumor is said to be _______.?

Medicine : A thread used in surgery to tie a bleeding blood vessel is called a(n) _________.?

Medicine : Carditis, affects the ________.?

Medicine : Due to a lack of vitamin C, sailors used to contract this disease.?