Blood circulation reduced

What are reduced circulatory systems?

Reduced circulatory system is a term used in medicine and physiology to describe an evolutionarily primitive form of the circulatory system. It is characterized by a relatively simple anatomical structure and a small number of vessels. A reduced circulatory system can be found in some primitive organisms such as algae, protozoa, echinoderms and worms.

Types of reduced circulatory system

There are several different types of reduced circulatory systems, but they all have some common features. These types include:

* Vascular algae - these organisms do not have specialized vascular elements, and blood flows through a network of interconnected channels. * Volvocilla in echinoderms - this species of mammal has a single network of blood vessels, which are combined into a system of several tubes called volvocilla. * Cervical organs - in some types of worms, such as round and flat worms, the heart sac is covered with an embryonic film. Blood passes from the heart to the organs through connecting vessels called cervical organs. * Tiered Circulation in Roundworms - Roundworms have a special form of tiered circulation in which the heart is located at the front of the body and is connected to the rest of the body through a series of diagonal or spiral vessels.

These systems