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Gizzard of a chicken. The gizzard, also referred to as the ventriculus, gastric mill, and gigerium, is an organ found in the digestive tract of some animals, including archosaurs (birds and other dinosaurs, crocodiles, alligators, pterosaurs), earthworms, some gastropods, some fish, and some crustaceans.
Insect morphology is the study and description of the physical form of insects. ... the crop and a poorly developed gizzard. After there is a midgut, ...
The crop is an anatomical structure in vertebrate animals, such as birds, and invertebrate animals, such as gastropods (snails and slugs), earthworms, [1] leeches, [2] and insects. [ 3 ] Insects
The proventriculus is a standard part of avian anatomy, and is a rod shaped organ, located between the esophagus and the gizzard of most birds. [2] It is generally a glandular part of the stomach that may store and/or commence digestion of food before it progresses to the gizzard. [3]
This bird feeds on seeds, berries and small insects; foraging primarily on the ground [6] [7] Like most granivores, the brush bronzewing will swallow small pieces of grit and pebble to aid the grinding of seeds within the gizzard. Local movements are likely a response to food and habitat availability. [4]
Their diet consists of berries, any small insects, fruits, vegetables. Phainopeplas have a specialized mechanism in their gizzard that shucks berry skins off the fruit and packs the skins separately from the rest of the fruit into the intestines for more efficient digestion. [citation needed] So far this is the only known bird able to do this.
The gizzard shad's dorsal fin starts behind the insertion of the pelvic fins, and the last ray is greatly lengthened. They have a long anal fin, with 25 to 36 long soft rays on the fin. [6] The mouth of the gizzard shad has a short, wide, upper jaw with a deep notch along the ventral margin, and a weak, relatively smaller, lower jaw.
The small size has forced many species to sacrifice some of their anatomy, like the heart, crop, and gizzard. While the exoskeleton and respiration system of the insects seems to be the major limiting factors regarding how large they can get, the limit for how small they can become appears to be related to the space required for their nervous ...
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