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Related Concept Videos

Overview of Systemic Arteries01:11

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.
Systemic circulation is the part of the cardiovascular system that carries oxygenated blood away from the heart to the body's tissues and returns deoxygenated blood back to the heart.
Veins01:17

Veins

Veins are an integral part of our circulatory system, serving as the blood vessels that transport blood from all body regions to the heart. They are a network of hollow tubes that carry blood low in oxygen from the body's cells back to the heart for reoxygenation. Veins are crucial for maintaining the body's overall fluid balance and the continuous circulation of blood.
Structure of Veins:
The structure of veins is specifically designed to assist in the low-pressure transportation of blood...
Veins of Thorax01:19

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.
The azygos vein, positioned just right of the midline and anterior to the vertebral column, begins at the junction of the right ascending lumbar and subcostal veins, terminating in the superior vena cava. This vein drains blood from the right side of the thoracic wall, thoracic viscera, and posterior abdominal wall.
The...
Veins of Upper Limbs01:17

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.
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
Overview of Systemic Veins01:11

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.
The coronary sinus, the heart's principal vein, resides in the coronary sulcus on the heart's posterior aspect. This broad venous channel receives nearly all venous blood from the myocardium, the heart muscle. It is fed by three primary veins: the great cardiac vein, the middle...
Anatomy of Blood Vessels01:20

Anatomy of Blood Vessels

The vascular system, an integral part of the circulatory system, comprises various blood vessels that play crucial roles in maintaining the body's homeostasis. These blood vessels form a complex and efficient circulatory network. The three primary categories of blood vessels are the arteries, veins, and capillaries.
Arteries
Arteries circulate oxygenated blood from the heart, except the pulmonary artery, which transports deoxygenated blood to the lungs. Large arteries, such as the aorta, have...

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Related Experiment Video

Updated: Jun 23, 2026

Creating Radio-cephalic Arteriovenous Fistula in the Forearm with a Modified No-Touch Technique
07:30

Creating Radio-cephalic Arteriovenous Fistula in the Forearm with a Modified No-Touch Technique

Published on: April 1, 2022

Artery, vein, neither, both?

Nathan T Tagg1, Andrew G Lee, Nasreen A Syed

  • 1Department of Ophthalmology and Visual Sciences, the University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA.

Survey of Ophthalmology
|May 9, 2009
PubMed
Summary
This summary is machine-generated.

Combined retinal vascular occlusive disease can signal optic nerve sheath metastasis. This rare presentation of metastatic adenocarcinoma highlights the need for clinicians to consider optic nerve disorders in retinal vascular disease.

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Training a Sophisticated Microsurgical Technique: Interposition of External Jugular Vein Graft in the Common Carotid Artery in Rats
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Area of Science:

  • Ophthalmology
  • Oncology
  • Pathology

Background:

  • Combined central retinal artery and vein occlusion is a rare condition.
  • It is often associated with compressive or infiltrative optic nerve diseases.

Observation:

  • A case of combined retinal arterial and venous occlusive disease was observed.
  • This condition presented as the initial sign of metastatic adenocarcinoma infiltrating the optic nerve sheath.

Findings:

  • Optic nerve sheath biopsy confirmed metastatic adenocarcinoma.
  • The study identified a rare cause of retinal vascular occlusion.

Implications:

  • Clinicians must consider optic nerve disorders, including metastatic carcinoma, as a potential cause of retinal vascular disease.
  • Early diagnosis and awareness of this association are crucial for patient management.