Table of Contents
What is the opening through which wastes are eliminated?
anus
The rectum opens to the outside with an opening called the anus. The anus is controlled by two sphincters, or circular muscles – the internal anal sphincter and the external anal sphincter which maintain the constriction of the anus to prevent leakage of waste material.
What is the waste eliminated through the defecation process?
Elimination. The food molecules that cannot be digested or absorbed need to be eliminated from the body. The removal of indigestible wastes through the anus, in the form of feces, is defecation or elimination.
What is elimination in the digestive system?
Elimination. The final step in digestion is the elimination of undigested food content and waste products. The undigested food material enters the colon, where most of the water is reabsorbed.
Which phyla has incomplete digestion?
Major Invertebrate Phyla
| Phylum (includes) | Notable Characteristics | Example |
|---|---|---|
| Porifera (sponges) | multicellularity, specialized cells but no tissues, asymmetry, incomplete digestive system | sponges |
| Cnidaria (jellyfish, corals) | radial symmetry, true tissues, incomplete digestive system | jellyfish |
What is assimilation digestion?
Assimilation is the movement of digested food molecules into the cells of the body where they are used. For example: glucose is used in respiration to provide energy. amino acids are used to build new proteins.
What is bowel elimination definition?
Bowel elimination is a natural process critical to human functioning in which body excretes waste products of digestion. It is a essential component of the healthy body functioning. OR Defecation (bowel elimination) is the act of expelling feces (stool) from the body.
Where waste is stored before it is eliminated from the body?
rectum
The last part of the large intestine is the rectum, which is where feces (waste material) is stored before leaving the body through the anus. The main job of the large intestine is to remove water and salts (electrolytes) from the undigested material and to form solid waste that can be excreted.
Which of the following have an incomplete digestive system one opening?
Animals with an incomplete digestive system are those in which the digestive tract has only one opening (cnidarians, platyhelminthes).