The Bloodworm - cardiovascular systems

Earthworm Circulatory System, Overview, Anatomy & Diagram

Phylum Platyhelminthes - THE CIRCULATORY SYSTEM

Circulatory system of earthworm

Mass transport in animals

A multiscale approach reveals elaborate circulatory system and intermittent heartbeat in velvet worms (Onychophora)

A dynamic spatiotemporal extracellular matrix facilitates epicardial-mediated vertebrate heart regeneration - ScienceDirect

Annelida - Circulatory System

Brief Comparative Phylogeny

PDF) Function and control of the fish secondary vascular system, a contrast to mammalian lymphatic systems

Earthworm Circulatory System, Overview, Anatomy & Diagram

Earthworm_circulation