What are the 4 digestive processes?
Motility, digestion, absorption and secretion are the four vital functions of the digestive system. The digestive system breaks down the foods we eat into energy our bodies can use.
What is digestive process of earthworm?
The gizzard uses stones that the earthworm eats to grind the food completely. The food moves into the intestines as gland cells in the intestine release fluids to aid in the digestive process. The intestinal wall contains blood vessels where the digested food is absorbed and transported to the rest of the body.
What are four organ systems in the earthworm?
Earthworms do all this with basic organ systems.
- Respiratory System. Earthworms don’t have lungs like mammals do.
- Circulatory System. An earthworm has a closed circulatory system that uses vessels to send blood through its body.
- Muscular System.
- Digestive System.
- Excretory System.
- Nervous System.
- Reproductive System.
What is the correct pathway of digestion in an earthworm?
Digestion starts in the mouth, which takes in soil. The food is then transferred to the pharynx, which swallows the dirt into the esophagus. Instead of a stomach, earthworms have a crop which stores food and connects to the gizzard. The gizzard contains small stones the earthworm swallows.
What are the 5 phases of digestion?
Figure 2: The digestive processes are ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and defecation. Some chemical digestion occurs in the mouth.
Do earthworms have complete digestive system?
While segmented worms such as the earthworm and flatworms such as the planarian are both worms they differ in their means of moving from place to place and in their digestive system type. Earthworms have a complete digestive system, one which has two openings, the mouth and the anus.
What is the function of stomach in earthworm?
The stomach has a calciferous gland that helps in the neutralisation of food by the calcification process. Stomach leads to the intestine. The glandular cells of the stomach produce proteolytic enzymes which assist in the digestion of protein.
Do earthworms have a complete digestive system?
Where does mechanical digestion occur in an earthworm?
Mechanical digestion begins in the mouth of a human and occurs in the gizzard of a worm.
Does an earthworm have a complete digestive system?
What are the reproductive structures of the earthworm?
The female reproductive system of earthworm comprises ovaries, oviduct and spermatheca….Female Reproductive Organ
- One pair of ovaries, present at 13th segment.
- Each ovary consists of several finger-like projections.
- In these projections, developing ova are present in a row, which looks like a series of beads.