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Encyclopedia > Left coronary artery
Artery: Left coronary artery
Base of ventricles exposed by removal of the atria. (Left coronary artery visible at left.)
The arch of the aorta, and its branches.
Latin '
Gray's subject #142 547
Supplies
From
To
Vein
MeSH [1]

The left coronary artery, also abbreviated LCA, arises from the aorta above the left cusp of the aortic valve. It typically runs for 1 to 25 mm and then bifurcates into the left anterior descending (LAD) artery and the left circumflex artery (LCX). The part that is between the aorta and the bifurcation only is known as the left main artery (LM), while the term 'LCA' might refer to just the left main, or to the left main and all its eventual branches. If an artery arises from the left main between the LAD and LCX, it is known as the ramus intermedius. The ramus intermedius occurs in 37% of the general population, and is considered a normal variant. Image File history File links Download high resolution version (451x700, 149 KB) Summary Licensing File links The following pages link to this file: Aorta Pulmonary artery Wikipedia:Grays Anatomy images with missing articles 11 Ligamentum arteriosum Aortic arch List of images in Grays Anatomy: VI. The Arteries Ascending... Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ...


The LAD runs down the anterior interventricular groove, and is known as the anterior interventricular artery in anatomy texts. In 78% of cases, it reaches the apex of the heart. It supplies the anterolateral myocardium, apex, and interventricular septum. The LAD typically supplies 45-55% of the left ventricle (LV). The LAD gives off two types of branches: septals and diagonals. Septals originate from the LAD at 90 degrees to the surface of the heart, perforating and supplying the intraventricular septum. Diagonals run along the surface of the heart and supply the lateral wall of the LV and the anterolateral papillary muscle. In anatomy, the papillary muscles of the heart serve to limit the movements of the mitral and tricuspid valves and prevent them from being everted. ...


The LCX runs across the left atrioventricular groove. It gives off obtuse marginal (OM) branches. The LCX supplies the posterolateral LV and the anterolateral papillary muscle. It also supplies the sinoatrial nodal artery in 38% of people. It supplies 15-25% of the left ventricle in right-dominant systems. If the coronary anatomy is left-dominant, the LCX supplies 40-50% of the left ventricle. In anatomy, the papillary muscles of the heart serve to limit the movements of the mitral and tricuspid valves and prevent them from being everted. ...


See also

Arteries edit

pulmonary - aorta - ascending aorta - aortic arch - brachiocephalic - carotid - common carotid (Gray's s141-Gray's s143) The coronary circulation consists of the blood vessels that supply blood to, and remove blood from, the heart. ... Section of an artery An artery or arterial is also a class of highway. ... Grays Fig. ... The largest artery in the human body, the aorta originates from the left ventricle of the heart and brings oxygenated blood to all parts of the body in the systemic circulation. ... The arch of the aorta, and its branches. ... The arch of the aorta, and its branches. ... The brachiocephalic artery (or trunk) is an artery of the mediastinum that supplies blood to the right arm and the head. ... In human anatomy, the carotid artery is a major artery of the head and neck. ... Left Common Carotid Artery- One of three arteries that originate along the aortic arch. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


EXTERNAL CAROTID: superior thyroid - lingual - facial - occipital - stylomastoid - superficial temporal artery - maxillary - middle meningeal | (Gray's s144) The carotid artery is a major artery of the head and neck. ... The superior thyroid artery arises from the external carotid artery just below the level of the greater cornu of the hyoid bone and ends in the thyroid gland. ... The lingual artery arises from the external carotid between the superior thyroid and external maxillary; it first runs obliquely upward and medialward to the greater cornu of the hyoid bone; it then curves downward and forward, forming a loop which is crossed by the hypoglossal nerve, and passing beneath the... The Facial artery is an artery that supplies blood to several cranial structures. ... occipital artery ... The Stylomastoid Artery enters the stylomastoid foramen and supplies the tympanic cavity, the tympanic antrum and mastoid cells, and the semicircular canals. ... Arteries of the neck - right side. ... The maxillary artery is the larger of the two terminal branches of the external carotid artery. ... The middle meningeal artery is typically the first branch of the first part (retromandibular part) of the maxillary artery; one of the two terminal branches of the external carotid artery. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


INTERNAL CAROTID: ophthalmic - retinal - middle cerebral | (Gray's s146) The carotid artery is a major artery of the head and neck that supplies blood to the head and neck. ... The opthalmic artery is a branch of the internal carotid artery which supplies branches to supply the eye and other structures in the orbit: Central retinal artery Supraorbital artery Supratrochlear artery Lacrimal artery Dorsal nasal artery Short posterior ciliary arteries Long posterior ciliary arteries Posterior ethmoidal artery Anterior ethmoidal artery... The retinal artery or central retinal artery comes off the ophthalmic artery, running inferior to the optic nerve within its dural sheath to the eyeball. ... The middle cerebral artery (MCA) is one of the three major arteries that supplies blood to the brain. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


CIRCLE OF WILLIS: anterior cerebral - anterior communicating - posterior cerebral - posterior communicating | (Gray's s147) Circle of Willis in the human brain. ... The anterior cerebral artery supplies oxygen to most medial portions of frontal lobes and superior medial parietal lobes. ... The arterial circle and arteries of the brain. ... The arterial circle and arteries of the brain. ... The arterial circle and arteries of the brain. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


SUBCLAVIAN: vertebral - anterior spinal - posterior inferior cerebellar - internal thoracic - superior epigastric - basilar | ((Gray's s148) The subclavian artery is a major artery of the upper thorax that mainly supplies blood to the head and arms. ... The vertebral arteries are branches of the subclavian arteries. ... In human anatomy, the anterior spinal artery is the blood vessel that supplies the anterior portion of the spinal cord. ... The posterior inferior cerebellar artery (PICA) is one of the three main arterial blood supplies for the cerebellum. ... Right internal thoracic artery and its branches. ... Superior epigastric artery, internal thoracic artery and inferior epigastric artery. ... The basilar artery is one of the arteries which the brain supplies with oxygen-rich blood. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


AXILLA: axillary (lateral thoracic - subscapular - thoracoacromial - dorsal scapular) - brachial - radial - ulnar - posterior interosseous | (Gray's s149-Gray's s152) The armpit (or axilla) is the area on the human body directly under the area where the arm connects to the shoulder. ... Axillary artery and its branches - anterior view of right upper limb and thorax. ... Lateral thoracic artery and the axillary artery, with its other branches - anterior view of right upper limb and thorax. ... Axillary artery and its branches - anterior view of right upper limb and thorax. ... The thoracoacromial artery (a. ... The Dorsal scapular artery (or descending scapular artery) is a blood vessel which supplies the latissimus dorsi, levator scapulae, rhomboids, and trapezius. ... The brachial artery is a blood vessel of the upper arm. ... Arteries of the right forearm - anterior view. ... Arteries of the right forearm - anterior view. ... The dorsal interosseous artery (posterior interosseous artery) is an artery of the forearm. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


DESCENDING AORTA: thoracic aorta - bronchial - abdominal aorta - celiac artery (left gastric - hepatic - common hepatic - gastroduodenal - gastroepiploic - splenic) - mesenteric (superior - inferior) - marginal - renal | (Gray's s153-Gray's s154) The largest artery in the human body, the aorta originates from the left ventricle of the heart and brings oxygenated blood to all parts of the body in the systemic circulation. ... The largest artery in the human body, the aorta originates from the left ventricle of the heart and brings oxygenated blood to all parts of the body in the systemic circulation. ... Bronchial Artery The bronchial arteries supply nutrients and oxygen to the root of the lungs, the supporting tissues of the lungs, and the visceral pleura of the lungs. ... AORTA can also mean always-on real-time access, referring to WAN computer networks. ... celiac artery ... The left gastric artery arises from the coeliac trunk, and runs along the superior portion of the lesser curvature of the stomach, while the right gastric artery supplies the inferior portion. ... Hepatic artery is an artery that distributes blood to the liver, pancreas and gallbladder as well as to the stomach and duodenal portion of the small intestine. ... Branches of the celiac artery - stomach in situ. ... Branches of the celiac artery. ... Branches of the celiac artery. ... Branches of the celiac artery. ... The superior mesenteric artery arises from the anterior surface of the aorta, just inferior to the origin of the celiac trunk, and supplies the intestine from the duodenum and pancreas to the left colic flexure. ... In anatomy, inferior mesenteric artery supplies the large intestine from the left colic (or splenic) flexure to the upper part of the rectum. ... Frontal view of the abdominal aorta and the territory supplied by the inferior mesenteric artery. ... Human kidneys viewed from behind with spine removed The renal arteries normally arise off the abdominal aorta and supply the kidneys with blood. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


ILIAC/FETAL: common iliac - internal iliac - internal pudendal - external iliac - inferior epigastric - artery of Adamkiewicz - umbilical | (Gray's s155-Gray's s156) In human anatomy, iliac artery refers to several anatomical structures located in the pelvis: Common iliac artery - forms at terminus of the aorta. ... Bifurcation of the aorta and the right iliac arteries - side view. ... Bifurcation of the aorta and the right iliac arteries - side view. ... Internal pudental artery is the terminal branch of the anterior trunk of the internal iliac artery which supplies the external genitalia. ... Bifurcation of the aorta and the right iliac arteries - side view. ... Right inferior epigastric artery - view from inside of abdomen. ... In human anatomy, the Artery of Adamkiewicz, also Adamkiewicz artery, major anterior segmental medullary artery and great anterior segmental medullary artery, is the largest anterior segmental medullary artery. ... Umbilical arteries carry deoxygenated blood from the fetus to the placenta in the umbilical cord. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


LEGS: femoral - profunda femoris - popliteal - anterior tibial - dorsalis pedis - posterior tibial - peroneal | (Gray's s157-Gray's s162) Shaved female legs In common usage, a human leg is the lower limb of the body, extending from the hip to the ankle, and including the thigh, the knee, and the cnemis. ... Femoral artery and its major branches - right thigh, anterior view. ... The profunda femoris artery (also known as the deep femoral artery, or the deep artery of the thigh) is a branch of the femoral artery that, as its name suggests, travels more deeply (posteriorly) than the rest of the femoral artery. ... Arteries of the lower limb - posterior view. ... Anterior tibial artery and the muscles and bones of the leg - anterior view of right leg. ... In anatomy, the dorsalis pedis artery of the lower limb carries blood to the dorsal surface of the foot, from the anterior tibial artery. ... Arteries of the lower limb - posterior view. ... Arteries of the lower limb - posterior view. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


  Results from FactBites:
 
Heart disease and cardiovascular disorders - coronary artery disease, heart attack, stroke, atherosclerosis (2335 words)
Over time, coronary artery disease can also weaken the heart muscle and contribute to heart failure (inability of the heart to pump blood to the rest of the body the way that it should), or to arrhythmias (changes in the normal rhythm of the heartbeats).
In the literature, coronary artery disease, coronary heart disease, ischemic heart disease, and heart disease are often used interchangeably.
Coronary arteries already narrowed by arteriosclerosis are made susceptible to blockage by a clot (coronary thrombosis), causing the death of the heart muscle supplied by the affected artery, a life-threatening event called a myocardial infarction, or heart attack.
Coronary circulation - Wikipedia, the free encyclopedia (1077 words)
The coronary arteries that run on the surface of the heart are called epicardial coronary arteries.
During contraction of the ventricular myocardium (systole), the subendocardial coronary vessels (the vessels that enter the myocardium) are compressed due to the high intraventricular pressures.
In the coronary circulation, norepinephrine elicits vasodilation, due to the predominance of beta-adrenergic receptors in the coronary circulation.
  More results at FactBites »


 

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