Laboratory for BIO 1016 and BIO 3001

This set of flashcards covers key terms and concepts from the laboratory lecture notes regarding the Phylum Annelida, its classes, and important anatomical features.

Phylum Annelida

Segmented worms that live in marine, fresh water, and moist terrestrial habitats.

Coelom

The true body cavity that surrounds and contains the digestive tract and other organs.

Peritoneum

The cellular layer that lines both sides of the coelom.

Oligochaeta

Class of annelids that have few bristles and include earthworms.

Setae

Bristles along the body of earthworms, used for movement.

Clitellum

An enlarged ring in segmented worms that secretes mucus for copulation.

Typhlosole

A swollen ridge in the intestine that increases surface area for absorption.

Peristalsis

The kind of rippling motion produced by the contraction of muscle layers in the body wall.

Class Polychaeta

Class of annelids that live in marine environments and often have many bristles.

Parapodia

Lateral appendages used by polychaetes for locomotion and gas exchange.

Class Hirudinea

Class that includes leeches, which lack setae and parapodia and can be predators or parasites.

Anticoagulant

Substance secreted by blood-feeding leeches to prevent clotting.