alimentary canal

Examples of alimentary canal in the following topics:

• Invertebrate Digestive Systems

  • Invertebrate digestive systems include a gastrovascular cavity with one opening or an alimentary canal with a true mouth and anus.
  • The alimentary canal is a more advanced digestive system than a gastrovascular cavity and carries out extracellular digestion.
  • Most other invertebrates like segmented worms (earthworms), arthropods (grasshoppers), and arachnids (spiders) have alimentary canals .
  • (b) An alimentary canal has two openings: a mouth for ingesting food and an anus for eliminating waste, as shown in this nematode.
  • Invertebrates like grasshoppers have alimentary canals with specialized compartments for digestion.

• Mouth

  • The mouth is the first portion of the alimentary canal, which receives and mechanically breaks down food, and produces saliva.
  • While its primary function is to begin the process of mechanically and chemically digesting food, the mouth is also the beginning of the alimentary canal - a larger digestive tube.
  • The mouth is the first portion of the alimentary canal.

• Development of Metabolism

  • The hindgut (or epigaster) is the posterior (caudal) part of the alimentary canal.

• Processes and Functions of the Digestive System

  • The digestive system is comprised of the alimentary canal, or the digestive tract, and other accessory organs that play a part in digestion - such as the liver, the gallbladder, and the pancreas.
  • The alimentary canal and the GI tract are sometimes used interchangeably.
  • The alimentary canal is the long tube that runs from the mouth (where the food enters) to the anus (where indigestible waste leaves).
  • The organs in the alimentary canal include the mouth (the site of mastication), the esophagus, the stomach, the small and large intestines, the rectum, and the anus.

• Amnion Development

  • Note: That some of the liquor amnii is swallowed by the fetus is proved by the fact that epidermal debris and hairs have been found among the contents of the fetal alimentary canal.

• Superphylum Lophotrochozoa

  • Animals belonging to superphylum Lophotrochozoa are protostomes: the blastopore (or the point of involution of the ectoderm or outer germ layer) becomes the mouth opening to the alimentary canal.

• Malpighian Tubules of Insects

  • They are usually found in pairs in the posterior regions of arthropod alimentary canals; the number of tubules varies with the species of insect.

• Digestive Systems

  • The digestive system consists of a group of organs that form a closed tube-like structure called the gastrointestinal tract (GI tract) or the alimentary canal .

• Anatomy of the Small Intestine

  • The hindgut (or epigaster) is the posterior (caudal) part of the alimentary canal.

• Canals