Atrioventricular nodal branch

Atrioventricular nodal branch
Sternocostal surface of heart.
ARTERIES: RCA = right coronary AB = atrial branches SANB = sinuatrial nodal RMA = right marginal LCA = left coronary CB = circumflex branch LAD/AIB = anterior interventricular LMA = left marginal PIA/PDA = posterior descending AVN = atrioventricular nodal VEINS: SCV = small cardiac ACV = anterior cardiac AIV/GCV = great cardiac MCV = middle cardiac CS = coronary sinus
Details
Latin	Ramus nodi atrioventricularis
Identifiers
Dorlands /Elsevier	r_02/12691166
TA	A12.2.03.110 A12.2.03.213
FMA	3851
Anatomical terminology

The atrioventricular nodal branch is a cardiac artery that is crucial because it feeds the atrioventricular node, necessary for the excitation and contraction of the ventricles. Most frequently (in over 80% of humans) it arises as a distal branch from the right coronary artery near the crux of the heart. In some people, the atrioventricular node instead receives blood from the circumflex branch of the left coronary artery, otherwise known as the left circumflex coronary artery or LCX. Very rarely, in approximately 2% of people, the vascular supply to the atrioventricular node arises from both the right coronary artery and the left circumflex branch. ^[1]

References

↑ Sow ML, Ndoye JM, Lo EA. The artery of the atrioventricular node: an anatomic study based on 38 injection-dissections. Surg Radiol Anat 1996;18:183–187

Arteries of the torso and chest

Pulmonary

Coronary

Ascending aorta/
aortic arch

Brachiocephalic	Thyreoidea ima Right subclavian Right common carotid

Left common carotid	External carotid Internal carotid Carotid body Carotid sinus Carotid bifurcation

Left subclavian	Internal thoracic: Anterior intercostal Thymic Pericardiacophrenic Perforating branches terminal (Musculophrenic, superior epigastric) Costocervical trunk: Highest intercostal (Posterior intercostal 1–2) Deep cervical

Other	Aortic body

Descending/
thoracic aorta

parietal: Posterior intercostal 3 * 11
Subcostal
Superior phrenic

Index of the circulatory system

Description	Anatomy Arteries head and neck arms chest abdomen legs Veins head and neck arms chest abdomen and pelvis legs Development Cells Physiology proteins

Disease	Congenital Neoplasms and cancer Lymphatic vessels Injury Vasculitis Other Symptoms and signs eponymous

Treatment	Procedures Drugs beta blockers channel blockers diuretics nonsympatholytic vasodilatory antihypertensives peripheral vasodilators renin–angiotensin system sympatholytic antihypertensives vasoprotectives

Atrioventricular nodal branch

See also

References