Anatomy Of Earthworm

Annelida in latin means little rings the body of the earthworm is segmented which looks like many little rings joined or fused together. The very first section of the anterior contains the mouth and prostomium.

Earthworm Morphology Body Anatomy Concepts Questions And

There is a small tongue like lobe just above the mouth called the prostomium see figure 1.

Anatomy of earthworm. Externally a thin non cellular cuticle covers the body wall of the earthworm. Earthworm anatomy learn with flashcards games and more for free. Earthworms are classified in the phylum annelida or annelids.

Earthworms have a closed circulatory system constituting a heart. The two tubes are separated by an extensive space the body cavity or coelom. Stores food until it can be ground up by the gizzard.

The first segment of the earthworm the peristomium see figure 1 contains the mouth. The front or head of the worm is called the anterior. An earthworm is a tubular segmented worm of the phylum annelida.

The body wall is the outer tube and the alimentary canal is the inner tube. Earthworms use the prostomium to see their environment as earthworms have no eyes ears nose or hands. The alimentary canal is a long tube running from first to the last segment.

It respirates through its skin. Extends o produces stores and releases sperm. Internal anatomy of earthworm.

Start a free trial of quizlet plus by thanksgiving lock in 50 off all year try it free ends in 02d 20h 00m 51s. The earthworm is made of about 100 150 segments. Notice that the earthworm has a rounded dorsal back.

Find the anterior front end of the earthworm by locating the fleshy bump over its mouth. An earthworms digestive system runs the length of its body. The external body of an earthworm is well adapted for living in the soil similar to the external structure of other insects.

Anatomy of an earthworm. A muscular opening at the end of the rectum through which wast where digestion begins organs that remove metabolic wastes from an animals body a connects the mouth to the esophagus. They occur worldwide and are commonly found in soil eating live and dead organic matter.

About one third of the way back from the mouth you should see a thicker and smoother section. Morphology of earthworm anatomy. What is the external anatomy of an earthworm.

It is to be noted that the body of the earthworm is essentially a double tube.

Earthworms