AP BIOLOGY

Detailed explanation-1: -gizzard, in many birds, the hind part of the stomach, especially modified for grinding food. Located between the saclike crop and the intestine, the gizzard has a thick muscular wall and may contain small stones, or gastroliths, that function in the mechanical breakdown of seeds and other foods.

Detailed explanation-2: -From the gizzard, food passes into the small intestine, where nutrients are absorbed. The residue then passes through the ceca, a blind sack along the lower intestinal tract, where bacteria help break down undigested food.

Detailed explanation-3: -Information. The gizzard is the mechanical stomach of a bird. It is located just after the true or glandular stomach in the gastrointestinal system. Since poultry have no teeth and swallow feed whole, this muscular organ, sometimes called hen’s teeth, mechanically grinds and mixes the bird’s feed.

Detailed explanation-4: -What we call a gizzard is the muscular part of a bird’s stomach. When a bird swallows food, it goes from the throat to the esophagus.

Detailed explanation-5: -The gizzard has a number of important functions, such as aiding digestion by particle size reduction, chemical degradation of nutrients and regulation of feed flow, and responds rapidly to changes in the coarseness of the diet.