Describe the digestive system and
process of digestion in Pheretima.
Answers
Answer:
Physiology of Digestion
The digestion of earthworm is an extracellular process. The mouth and the buccal cavity takes part in the ingestion. Complete digestion of food takes place in the intestine. Various enzymes present in the intestine act on food and digested food gets absorbed.
Buccal Cavity: 2-3
Parts of the alimentary canal: No. of the segment in the body
Intestine: 15-last
Food and liquid-taking organs that break them down into compounds the body may utilise for energy, growth, and tissue repair. Bowel motions remove waste items that the body cannot utilise. The mouth, pharynx (throat), oesophagus, stomach, small intestine, large intestine, rectum, and anus are all parts of the digestive system. The salivary glands, liver, gallbladder, and pancreas, which produce digestive fluids and enzymes to aid in the digestion of food and liquids, are also included. Also known as the digestive system.
Process of digestion in Pheretima.
The alimentary canal is a straight tube that travels from the first to the last part of the body in pheretima. The mouth (1-3 segments) opens into the buccal cavity, which leads to the muscular pharynx (4th segment). The oesophagus (5-7 segments) is a tiny, thin tube that leads to the muscular gizzard (8th segment). It aids in the crushing of minute food particles and decomposing leaves (grinding mill). The stomach is made up of segments 9 through 14. The earthworm's meal is rotting. Organic particles such as leaves and other organic debris are mixed in with the soil. The humic acid in the humus of the soil is neutralised by calciferous glands in the stomach.
The humic acid in the humus of the soil is neutralised by calciferous glands in the stomach. The intestine begins at the 15th segment and ends at the final section. In the 26th segment, a pair of short and conical intestinal caecae protrude from the gut. The typhiosole, an internal median fold of the dorsal wall of the gut that aids in enhancing the absorption area, is poorly developed in Pheretima (between the 26th and the rectum which occupies the last 23 to 28 segments). A little spherical opening called anus connects the alimentary canal to the outside world.