sentence: Blood travels across the body through the network of blood vessels.
sentences_before: The circulatory system of fish is responsible for transporting blood and nutrients throughout the body.
sentences_after: Unlike humans, fish have single cycle circulation, where the oxygen-deprived blood comes to the heart, from where it is pumped to the gills and then circulated to the entire body. The circulatory system of fish consists of a heart, blood and blood vessels. The heart of a fish is a simple muscular structure that is located between the posterior gill arches. In most fish, the heart consists of an atrium, a ventricle, a sac-like thin walled structure known as sinus venosus and a tube, known as bulbus arteriosus. In spite of containing four parts, the heart of a fish is considered two-chambered.
concept_name: blood
headings: Goldfish Circulatory system
categories: Pets Teleosts