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Overview of Systemic Veins

Overview of Systemic Veins

Systemic veins are crucial blood vessels that return deoxygenated blood from various body tissues back to the heart. There are three systemic veins that return deoxygenated blood to the heart, they are as follows.
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Overview of Systemic Arteries

Overview of Systemic Arteries

The human body is a complex, well-organized machine, and at the heart of its operations lies the circulatory system. This network of blood vessels, which includes systemic arteries, plays a vital role in maintaining life by transporting nutrients, oxygen, and waste products to and from cells throughout the body.
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Veins of Thorax

Veins of Thorax

The azygos system is a crucial part of the body's circulatory system and drains most of the thorax. It comprises the azygos, hemiazygos, and accessory hemiazygos veins.
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Veins of Upper Limbs

Veins of Upper Limbs

The human circulatory system, a marvel of biological engineering, is a complex network of vessels that transport blood throughout the body. Among these, the veins responsible for carrying blood from the upper limbs are divided into two categories: deep and superficial.
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Chambers of the Heart

Chambers of the Heart

The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
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Related Experiment Video

Updated: Jul 9, 2026

Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens

Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens

Published on: April 18, 2013

Anomalous venous system in the human heart.

Akimitsu Ishizawa¹, Ming Zhou, Hiroshi Abe

¹Department of Anatomy, Akita University School of Medicine, Hondo 1-1-1, Akita 010-8543, Japan. ishizawa@med.akita-u.ac.jp

Anatomical Science International

|December 8, 2007

Summary

A rare congenital heart variation revealed a persistent left superior vena cava and an abnormal coronary sinus drainage. This complex venous anomaly, identified during a cadaver dissection, offers insights into cardiac development.

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Area of Science:

Cardiovascular Anatomy
Congenital Heart Variations
Human Embryology

Background:

Anatomical variations in the heart's venous system are uncommon.
Understanding these variations is crucial for accurate diagnosis and surgical planning.

Observation:

A cadaveric dissection revealed a unique complex venous system in an 88-year-old male.
Key variations included a persistent left superior vena cava and an obliterated coronary sinus orifice.

Findings:

The innominate vein coursed between the aorta and pulmonary trunk, connecting to the left superior vena cava.
The great cardiac vein bifurcated, with one branch forming the innominate vein and the other draining into the coronary sinus.
An abnormal communication existed between the left atrium and the coronary sinus.

Implications:

This case highlights the diverse spectrum of congenital venous anomalies.
Such variations can impact surgical planning and interpretation of diagnostic imaging.
Further study is needed to understand the functional significance and embryological origins.