Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Circulatory system

In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels). The circulatory system has two…

History & Art

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Circulatory system. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

FMA
7161
MeSH
D002319

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Structure

Development

Function

Clinical significance

Other animals

History

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Circulatory system

Nodes263
Edges262
Triples92
Avg. degree1.99
Density0.007605
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Circulatory system

Top relations

related to history · 21
Circulatory system → Although, Ancient, Ayurvedic, BC, BCE, Because, Dwivedi, Ebers Papyrus, Egyptian, From, Greek, He, Hippocratic, However, In, India, Plato, Sushruta, The, The Egyptians
related to Investigations · 11
Circulatory system → An, An MRI, Angiography, At, CT, For, MRI, Other, The, These, Vascular
related to External links · 9
Circulatory system → Anatomy, Circulatory Pathways, Manuscript, OpenStaxThe Circulatory SystemMichael Servetus, Paris, Physiology, Pulmonary Circulation, Research Study, Servetus
related to No circulatory system · 7
Circulatory system → Circulatory, Consequently, Instead, Oxygen, Some, The, Their
related to Closed circulatory system · 5
Circulatory system → Closed, In, Still, The, This
related to Open circulatory system · 5
Circulatory system → Hemolymph, In, Muscular, The, When
related to Clinical significance · 4
Circulatory system → Cardiologists, Many, These, Vascular
related to Structure · 4
Circulatory system → An, Blood, Some, The
related to Development · 3
Circulatory system → Before, Fetal, The
related to Other animals · 3
Circulatory system → An, The, While

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

blood heart system circulatory arteries circulation veins vessels body capillaries pulmonary lungs oxygen also cardiovascular lymphatic aorta systemic diseases nutrients

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Circulatory systemFMA71611.00infobox
Circulatory systemMeSHD0023191.00infobox
Circulatory systemis asystem of organs that includes the heart0.90text
Circulatory systemis asystem in which a fluid in a cavity called the hemocoel or haemocoel bathes the organs directly with oxygen and nutrients0.90text
arthropods have an open circulatory system with a heart that pumps a hemolymph which returns via the body cavity rather than via blood vesselsinstance ofMany invertebrates0.80text
spongesinstance ofDiploblasts0.80text
comb jellies lack a circulatory system.Blood is a fluid consisting of plasmainstance ofDiploblasts0.80text
red blood cellsinstance ofDiploblasts0.80text
white blood cellsinstance ofDiploblasts0.80text
and plateletsinstance ofDiploblasts0.80text
oxygeninstance ofand gases0.80text
carbon dioxideinstance ofand gases0.80text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.