Bashir, O. Superior vena cava. Reference article, Radiopaedia. Vascular , Chest. URL of Article. On this page:. Standring S, Gray H. Gray's anatomy, the anatomical basis of clinical practice. Churchill Livingstone. Read it at Google Books - Find it at Amazon. Related articles: Anatomy: Thoracic. Promoted articles advertising. Figure 1: mediastinum Gray's illustration Figure 1: mediastinum Gray's illustration.
Figure 2: venous development Gray's illustrations Figure 2: venous development Gray's illustrations. Figure 3: caval variants Figure 3: caval variants. Loading more images Close Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys.
Loading Stack - 0 images remaining. By System:. The superior vena cava starts at the lower border of the first costal cartilage. It is located posterior behind this first costal cartilage on the right side and descends vertically to the right of the trachea windpipe and the aorta the largest artery in the body.
This large vein drains into the right atrium of the heart at the superior cavoatrial junction located at the level of the third costal cartilage. The lower half of the superior vena cava is covered by pericardium—a sac that encloses the heart.
The superior vena cava ends at the junction of the superior vena cava and the left atrium, emptying into the upper aspect of the right atrium at the level of the third costal cartilage. Anatomical variations of the superior vena cava include:. A congenital defect is an anomaly that occurs during fetal development. These are present at birth but may be diagnosed prenatally before birth. It's also possible that these defects are not diagnosed until later in life.
According to the World Health Organization WHO , heart defects such as those which commonly occur at the same time as anomalies of the SVC are among the most common and severe birth defects. The superior vena cava is a vital structure in the human circulatory system that helps drain large amounts of deoxygenated blood from the head, eyes, neck, and upper limbs into the upper left chamber atrium of the heart.
The superior vena cave is a vessel with thin walls and low pressure, which makes it susceptible to conditions that increase the venous pressure. This is an important factor when it comes to conditions of the superior vena cava. Anything that causes hypertension high blood pressure in the vessels of the right side of the heart—or the pulmonary circulation—can majorly impact the superior vena cava.
Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life. Blood vessels. Updated May 12, National Cancer Institute. Introduction to the cardiovascular system. Teach Me Anatomy. The superior vena cava. Updated October 9, Appraisal of the surface anatomy of the Thorax in an adolescent population. Clin Anat. Bell, D. Valveless vein. World Health Organization. Congenital anomalies. Updated December 1, Saha S. Persistent left superior vena cava - considerations in fetal, pediatric and adult populations.
Australasian Journal of Ultrasound in Medicine. High prevalence rate of left superior vena cava determined by echocardiography in patients with congenital heart disease in Saudi Arabia. Libyan Journal of Medicine. Superior vena cava. Updated April Your Privacy Rights. To change or withdraw your consent choices for VerywellHealth. At any time, you can update your settings through the "EU Privacy" link at the bottom of any page. These choices will be signaled globally to our partners and will not affect browsing data.
We and our partners process data to: Actively scan device characteristics for identification. I Accept Show Purposes. Table of Contents View All. Table of Contents. Anatomical Variations.
0コメント