Login | Contact Us

Email us - info@tutorskingdom.com
Contact Number - 1-877-224-8273

Chat Now
Earthworm Nervous System

Assignment and Homework help in Earthworm Nervous System

Nervous System :


The nervous system consists of the following components.

1.The central nervous system :

         The central nervous system consists of a pair of suprapharyngeal  ganglia , a pair of circumpharyngeal connectives , a pair of subpharyngeal  ganglia and a double ventral ganglionated nerve cord. The suprapharyngeal or cerebral ganglia lie closely connected together in the anterior part of the third segment , in the groove separating the buccal chamber and the pharynx. A pair of circumpharyngeal connectives , one on either side of the pharynx connects the cerebral ganglia with a pair of subpharyngeal ganglia . These subpharyngeal ganglia lie beneath the pharynx . These ganglia and the connectives together form the nerve ring , which is present around the pharynx. The ventral nerve cord is present along the midventral line extending from the subpharyngial  ganglia to the posterior end of the body .

2.The peripheral nervous system :

           The peripheral nervous system includes , the nerves arising from the central nervous system and innervating the body parts.From the cerebral ganglia eight to ten nerves arise on each side.They divide and supply branches to the prostomium and the wall of the buccal chamber . The circumpharyngeal connectives give off nerves to the body wall of the first segment and the wall of the buccal chamber . The subpharyngeal ganglia supply nerves to the different structures in the second , third and fourth segments . The segmental ganglia in each body segment  , from 5th segment to the last segment , give off three pairs of nerves . These branches supply to the gut wall , body wall and the internal organs of the segment in which they are formed.

Homework Help & Assignment Help in Biology through Email



Biology experts at Tutors kingdom can help you explore the most puzzling concepts concerning life and living beings. We are always updated on latest researches in all biology-related fields. We have extensive knowledge and database that helps them to offer quick and well-written solutions to your homework assignments.  Easy-to-understand explanations and homework assignment help not only earn you good grades in class but also to understand the concept clearly.




We provide help you make a grade 12 project assignment on Classification, as well as help you write a thesis on Quantum Speciation or Mutations for graduate studies. Our tutors are highly qualified in fields of Botany, Zoology, Evolution, Cell Biology, Genetics, Ecology, Recombinant DNA Technology, and Microbiology and all inter-related fields. E-mail queries for homework help is assigned to a subject expert in the Biology panel, who would be responsible for offering quality solutions. A Subject experts at Tutors kingdom work round the clock to make sure that students receive answers to their homework assignment in few hours.

Comments are closed.

Sub Category