From Wikipedia -
The Parliament of Canada (French: Parlement du Canada) is Canada's legislative branch, seated at Parliament Hill in Ottawa, Ontario. According to Section 17 of the Constitution Act, 1867, parliament consists of three components: the sovereign, the Senate, and the House of Commons; the sovereign is normally represented by the Governor General, who appoints the 105 members of the Senate on the recommendation of the Prime Minister. The 308 members of the House of Commons are directly elected by the people, with each member representing a single electoral district, frequently called a constituency or a riding.
The lower house, the House of Commons, is the dominant branch of the Canadian parliament. The upper house, the Senate, rarely opposes the will of the other chamber, and the duties of the sovereign and Governor General are largely ceremonial, although both have reserve powers in which could refuse to grant royal assent to a bill, and could dismiss the Cabinet and call an election unprompted. The Prime Minister and Cabinet must retain the support of a majority of members of the Lower House to remain in office; they need not have the confidence of the Upper House.
The current parliament is the 40th since Confederation.
There is also a terrific and comprehensive description of Canada's Parliament, its history, and how it works at the Parliament of Canada website.