Chapter 25.1, Problem 1NV

Summary Introduction

To define:

The term pharynx, flame cells, ganglion, regeneration, scolex, proglottids.

Explanation of Solution

Pharynx is a tubelike structure that connects the oral cavity to esophagus and produces enzyme that initiates digestion of a prey.

Flame cells are the excretory structures of flatworms. They remove the nitrogenous waste material from the body of the organism.

Ganglion is part of nervous system where cell bodies of different nerves join to form a single structure. As many cell bodies are located together in this region, ganglions appear to be swollen regions.

Regeneration is a process of restoring tissues or lost body part by rapid cell division and differentiation in that region.

Scolex represents a sucker like organ of a tapeworm, which as a site of attachments to the host organs (intestine) for the worm.

Proglottids refer to individual section which is made of nerve cells, flame cell, muscles and reproductive organs. It is located behind the scolex of the worm.