The following is a list of the "A" codes for MeSH

Mesh

Mesh consists of semi-permeable barrier made of connected strands of metal, fiber, or other flexible/ductile material. Mesh is similar to web or net in that it has many attached or woven strands.-Types of mesh:...

. It is a product of the United States National Library of Medicine

United States National Library of Medicine

The United States National Library of Medicine , operated by the United States federal government, is the world's largest medical library. Located in Bethesda, Maryland, the NLM is a division of the National Institutes of Health...

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Source for content is here. (File "2006 MeSH Trees".)

--- arteries

--- aorta

Aorta

The aorta is the largest artery in the body, originating from the left ventricle of the heart and extending down to the abdomen, where it branches off into two smaller arteries...

 --- aorta, abdominal --- aorta, thoracic --- sinus of valsalva --- arterioles --- axillary artery

Axillary artery

In human anatomy, the axillary artery is a large blood vessel that conveys oxygenated blood to the lateral aspect of the thorax, the axilla and the upper limb...

 --- basilar artery

Basilar artery

In human anatomy, the basilar artery is one of the arteries that supplies the brain with oxygen-rich blood.The two vertebral arteries and the basilar artery are sometimes together called the vertebrobasilar system, which supplies blood to the posterior part of circle of Willis and anastomoses with...

 --- brachial artery

Brachial artery

The brachial artery is the major blood vessel of the arm.It is the continuation of the axillary artery beyond the lower margin of teres major muscle. It continues down the ventral surface of the arm until it reaches the cubital fossa at the elbow. It then divides into the radial and ulnar arteries...

 --- brachiocephalic trunk --- bronchial arteries --- carotid arteries --- carotid artery, common --- carotid artery, external --- carotid artery, internal --- carotid sinus

Carotid sinus

In human anatomy, the carotid sinus is a localized dilation of the internal carotid artery at its origin, the common carotid artery.-Functions:...

 --- celiac artery

Celiac artery

The celiac artery, also known as the celiac trunk, is the first major branch of the abdominal aorta. Branching from the aorta anterior to the upper border of L1 vertebra in humans, it is one of three anterior/ midline branches of the abdominal aorta The celiac (or coeliac) artery, also known as...

 --- cerebral arteries

Cerebral arteries

Cerebral arteries describe three main pairs of arteries and their branches, which irrigate the cerebrum of the brain. The three main arteries consist of the:*Anterior cerebral artery *Middle cerebral artery...

 --- anterior cerebral artery --- circle of willis

Circle of Willis

The Circle of Willis is a circle of arteries that supply blood to the brain...

 --- middle cerebral artery

Middle cerebral artery

-External links:*...

 --- posterior cerebral artery

Posterior cerebral artery

-External links: - Posterior Cerebral Artery Stroke* at strokecenter.org* at State University of New York Upstate Medical University* at psyweb.com* at neuropat.dote.hu...

 --- temporal arteries --- ciliary arteries

Ciliary arteries

The ciliary arteries are divisible into three groups, the long posterior, short posterior, and the anterior.* The short posterior ciliary arteries from six to twelve in number, arise from the ophthalmic as it crosses the optic nerve....

 --- coronary vessels --- epigastric arteries

Epigastric arteries

Epigastric arteries can refer to:* Superficial epigastric artery* Superior epigastric artery* Inferior epigastric artery...

 --- femoral artery

Femoral artery

The femoral artery is a general term comprising a few large arteries in the thigh. They begin at the inguinal ligament and end just above the knee at adductor canal or Hunter's canal traversing the extent of the femur bone....

 --- gastroepiploic artery

Gastroepiploic artery

Gastroepiploic artery is the name of two different arteries serving the stomach and greater omentum:* Left gastro-omental artery, a branch of the splenic artery* Right gastro-omental artery, a branch of the gastroduodenal artery...

 --- hepatic artery

Hepatic artery

Hepatic artery can refer to:* Common hepatic artery * Hepatic artery proper...

 --- iliac artery

Iliac artery

In human anatomy, iliac artery refers to several anatomical structures located in the pelvis:*Common iliac artery - forms at terminus of the aorta...

 --- maxillary artery --- meningeal arteries

Meningeal arteries

Meningeal arteries can refer to:* Middle meningeal artery* Posterior meningeal artery* Anterior meningeal artery...

 --- mesenteric arteries

Mesenteric arteries

Mesenteric arteries can refer to:* Superior mesenteric artery* Inferior mesenteric artery...

 --- mesenteric artery, inferior --- mesenteric artery, superior --- ophthalmic artery

Ophthalmic artery

The ophthalmic artery is the first branch of the internal carotid artery distal to the cavernous sinus. Branches of the OA supply all the structures in the orbit as well as some structures in the nose, face and meninges...

 --- popliteal artery

Popliteal artery

In human anatomy, the popliteal artery is defined as the extension of the "superficial" femoral artery after passing through the adductor canal and adductor hiatus above the knee...

 --- pulmonary artery

Pulmonary artery

The pulmonary arteries carry deoxygenated blood from the heart to the lungs. They are the only arteries that carry deoxygenated blood....

 --- radial artery

Radial artery

In human anatomy, the radial artery is the main blood vessel, with oxygenated blood, of the lateral aspect of the forearm.-Course:The radial artery arises from the bifurcation of the brachial artery in the cubital fossa. It runs distally on the anterior part of the forearm...

 --- renal artery

Renal artery

The renal arteries normally arise off the side of the abdominal aorta, immediately below the superior mesenteric artery, and supply the kidneys with blood. Each is directed across the crus of the diaphragm, so as to form nearly a right angle with the aorta....

 --- retinal artery --- splenic artery

Splenic artery

In anatomy, the splenic artery is the blood vessel that supplies oxygenated blood to the spleen. It branches from the celiac artery, and follows a course superior to the pancreas.-Branches:...

 --- subclavian artery

Subclavian artery

In human anatomy, the subclavian arteries are two major arteries of the upper thorax , below the clavicle . They receive blood from the top of the aorta...

 --- thoracic arteries

Thoracic arteries

Thoracic arteries can refer to:* Internal thoracic artery* Lateral thoracic artery* Superior thoracic artery* Thoracic aorta...

 --- mammary arteries --- tibial arteries

Tibial arteries

Tibial arteries can refer to:* Anterior tibial artery* Posterior tibial artery...

 --- ulnar artery

Ulnar artery

The ulnar artery is the main blood vessel, with oxygenated blood, of the medial aspect of the forearm. It arises from the brachial artery and terminates in the superficial palmar arch, which joins with the superficial branch of the radial artery...

 --- umbilical arteries --- vertebral artery

Vertebral artery

The vertebral arteries are major arteries of the neck. They branch from the subclavian arteries and merge to form the single midline basilar artery in a complex called the vertebrobasilar system, which supplies blood to the posterior part of the circle of Willis and thus significant portions of the...

--- endothelium, vascular

--- pericytes --- tunica intima

Tunica intima

The tunica intima is the innermost layer of an artery or vein. It is made up of one layer of endothelial cells and is supported by an internal elastic lamina...

--- microcirculation

Microcirculation

The microcirculation is a term used to describe the small vessels in the vasculature which are embedded within organs and are responsible for the distribution of blood within tissues; as opposed to larger vessels in the macrocirculation which transport blood to and from the organs...

--- arterioles --- arteriovenous anastomosis --- capillaries --- venules

--- muscle, smooth, vascular

--- tunica media

Tunica media

The tunica media is the middle layer of an artery or vein.-Artery:It is made up of smooth muscle cells and elastic tissue...

--- retinal vessels

--- retinal artery --- retinal vein

--- veins

--- axillary vein

Axillary vein

In human anatomy, the axillary vein is a large blood vessel that conveys blood from the lateral aspect of the thorax, axilla and upper limb toward the heart...

 --- azygos vein

Azygos vein

The azygos vein is a vein running up the right side of the thoracic vertebral column. It can also provide an alternate path for blood to the right atrium by allowing the blood to flow between the venae cavae when one vena cava is blocked.-Structure:...

 --- brachiocephalic veins --- cerebral veins

Cerebral veins

The cerebral veins are divisible into external and internal groups according to the outer surfaces or the inner parts of the hemispheres they drain into....

 --- coronary vessels --- cranial sinuses --- cavernous sinus

Cavernous sinus

The cavernous sinus , within the human head, is a large collection of thin-walled veins creating a cavity bordered by the temporal bone of the skull and the sphenoid bone, lateral to the sella turcica.-Contents:...

 --- femoral vein

Femoral vein

In the human body, the femoral vein is a blood vessel that accompanies the femoral artery in the femoral sheath. It begins at the adductor canal and is a continuation of the popliteal vein...

 --- hepatic veins --- iliac vein

Iliac vein

In human anatomy, iliac vein refers to several anatomical structures located in the pelvis:*External iliac vein - terminates at the common iliac vein, drains the femoral vein....

 --- jugular veins --- popliteal vein

Popliteal vein

The popliteal vein course runs alongside the popliteal artery but carries the blood from the knee joint and muscles in the thigh and calf back to the heart.Its origin is defined by the junction of the posterior tibial vein and anterior tibial vein....

 --- portal system --- mesenteric veins

Mesenteric veins

Mesenteric veins can refer to:* Inferior mesenteric vein* Superior mesenteric vein...

 --- portal vein --- splenic vein

Splenic vein

In anatomy, the splenic vein is the blood vessel that drains blood from the spleen.It joins with the superior mesenteric vein, to form the hepatic portal vein and follows a course superior to the pancreas, alongside of the similarly named artery, the splenic artery.It collects branches from the...

 --- umbilical veins --- pulmonary veins --- renal veins --- retinal vein --- saphenous vein

Saphenous vein

Saphenous vein may refer to:*Great saphenous vein*Small saphenous vein...

 --- subclavian vein

Subclavian vein

The subclavian veins are two large veins, one on either side of the body. Their diameter is approximately that of the smallest finger.-Path:Each subclavian vein is a continuation of the axillary vein and runs from the outer border of the first rib to the medial border of anterior scalene muscle...

 --- venae cavae

Venae cavae

The superior and inferior vena cava are collectively called the venae cavae. They are the veins that return deoxygenated blood from the body into the heart. They both empty into the right atrium....

 --- vena cava, inferior --- vena cava, superior --- venules

--- fetal heart

--- ductus arteriosus

Ductus arteriosus

In the developing fetus, the ductus arteriosus , also called the ductus Botalli, is a shunt connecting the pulmonary artery to the aortic arch. It allows most of the blood from the right ventricle to bypass the fetus's fluid-filled lungs. Upon closure at birth, it becomes the ligamentum arteriosum...

 --- truncus arteriosus

Truncus arteriosus

Truncus arteriosus may refer to:*Persistent truncus arteriosus, a rare congenital heart disease*Truncus arteriosus , part of an embryo's developing circulatory system...

--- heart conduction system

--- atrioventricular node

Atrioventricular node

The atrioventricular node is a part of the electrical control system of the heart that coordinates heart rate. It electrically connects atrial and ventricular chambers...

 --- bundle of his

Bundle of His

The bundle of His, known as the AV bundle or atrioventricular bundle, is a collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex of the fascicular branches...

 --- purkinje fibers

Purkinje fibers

For the nervous cells, see Purkinje cellPurkinje fibers are located in the inner ventricular walls of the heart, just beneath the endocardium...

 --- sinoatrial node

Sinoatrial node

The sinoatrial node is the impulse-generating tissue located in the right atrium of the heart, and thus the generator of normal sinus rhythm. It is a group of cells positioned on the wall of the right atrium, near the entrance of the superior vena cava...

--- heart valves

--- aortic valve

Aortic valve

The aortic valve is one of the valves of the heart. It is normally tricuspid , although in 1% of the population it is found to be congenitally bicuspid . It lies between the left ventricle and the aorta....

 --- chordae tendineae

Chordae tendineae

The chordae tendineae, or heart strings, are cord-like tendons that connect the papillary muscles to the tricuspid valve and the mitral valve in the heart....

 --- mitral valve

Mitral valve

The mitral valve is a dual-flap valve in the heart that lies between the left atrium and the left ventricle...

 --- papillary muscles --- pulmonary valve

Pulmonary valve

The pulmonary valve is the semilunar valve of the heart that lies between the right ventricle and the pulmonary artery and has three cusps. Similar to the aortic valve, the pulmonary valve opens in ventricular systole, when the pressure in the right ventricle rises above the pressure in the...

 --- tricuspid valve

Tricuspid valve

The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian heart, between the right atrium and the right ventricle. The normal tricuspid valve usually has three leaflets and three papillary muscles. They are connected to the papillary muscles by the chordae...