A Pot Roast generally refers more to the type of preparation of the meat rather than where the meat came from on the animal. While the cut of meat certainly can impact the texture and flavor of the pot roast, because of the slow cooking time generally applied to a pot roast, many different cuts are successful with this dish. Pot roast is typically obtained from the shoulder area of the cow. Other tough cuts such as chuck steak and boneless chuck roast also come from this area
The simple answer is - the tough and chewy parts.
The stewing process is a long slow cooking at low temperatures, which tenderizes the meat and gelatanizes collagen. Although stewing beef can come from anywhere on the cow, it is usually cut from the Chuck or Round (these two are the best) it can also come from the Shank (leg), Neck, Clod (shoulder) or Plate (underbelly) sections.
Given this source (poorer cuts) you may wonder why stewing beef costs more than other cuts for an equivalent weight. Basically it's to pay for the butcher's time to trim off the gristle and fat and collect the good bits. It is often cheaper to buy a chuck raost and cube it yourself.
The part of the cow that fajita meat comes from is the plate. Traditionally, fajita meat is made from skirt steaks which is made from the plate of the cow.
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http://ask.metafilter.com/27259/How-much-meat-is-there-on-a-cow
It is meat ariond the rib cage of the animal
The Chateaubriand cut of meat comes from a filet of the tenderloin of a cow. It is especially good when grilled medium rare.
Mondongo. A plate eaten in Costa Rica, it is actually a part of the intestine
Shepherd's pie should be made with lamb. Any part of the lamb can do, as the meat will be minced, usually.
Cow balls
Cow meat does not grow on neither vines or trees. Cow meat comes from the inside of a cow. Fruits and vegetables are the only foods that come from trees and vines. All edible meat come from some sort of animal like, pigs, cows, chikens, lambs, ducks, etc.
On a cow the sirloin tip comes from the backbone to middle stomach. The meat briskets is actually the breast of the cow and one of the larger cuts of meat.
Hamburger is not from a designated area of the cow, it usually is the cutoffs from making the prime, select or choice cuts (such as steaks and roasts) and any left over meat from the carcass.
Cow heel is cooked very slowly (about 2-3hours), until the meat falls off the bone. It is usually cooked in a stew or a soup. Alternately, it can be cooked and jellied, then served cold.