Anatomy Of Earthworm

Anatomy of an earthworm. The body wall is the outer tube and the alimentary canal is the inner tube.

Earthworm Morphology Body Anatomy Concepts Questions And

The front or head of the worm is called the anterior.

Anatomy of earthworm. Find the anterior front end of the earthworm by locating the fleshy bump over its mouth. It respirates through its skin. About one third of the way back from the mouth you should see a thicker and smoother section.

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. Start a free trial of quizlet plus by thanksgiving lock in 50 off all year try it free ends in 02d 20h 00m 51s. Extends o produces stores and releases sperm.

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. Annelida in latin means little rings the body of the earthworm is segmented which looks like many little rings joined or fused together.

The earthworm is made of about 100 150 segments. Notice that the earthworm has a rounded dorsal back. Externally a thin non cellular cuticle covers the body wall of the earthworm.

Earthworms have a closed circulatory system constituting a heart. The external body of an earthworm is well adapted for living in the soil similar to the external structure of other insects. Earthworms use the prostomium to see their environment as earthworms have no eyes ears nose or hands.

What is the external anatomy of an earthworm. The very first section of the anterior contains the mouth and prostomium. The alimentary canal is a long tube running from first to the last segment.

Earthworm anatomy learn with flashcards games and more for free. It is to be noted that the body of the earthworm is essentially a double tube. Morphology of earthworm anatomy.

Internal anatomy of earthworm. There is a small tongue like lobe just above the mouth called the prostomium see figure 1. Earthworms are classified in the phylum annelida or annelids.

An earthworms digestive system runs the length of its body. They occur worldwide and are commonly found in soil eating live and dead organic matter. An earthworm is a tubular segmented worm of the phylum annelida.

The two tubes are separated by an extensive space the body cavity or coelom.

Earthworm Anatomy Cross Section Carlson Stock Art