Terminal sulcus (heart)

Terminal sulcus
Details
Identifiers
Latin	Sulcus terminalis cordis
TA	A12.1.01.013
FMA	9287
*Anatomical terminology* [edit on Wikidata]

The terminal sulcus is a groove in the right atrium of the heart. The terminal sulcus marks the separation of the right atrial pectinate muscles from the sinus venarum. The terminal sulcus extends from the front of the superior vena cava to the front of the inferior vena cava, and represents the line of union of the sinus venosus of the embryo with the primitive atrium. On the internal aspect of the right atrium, corresponding to the terminal sulcus is the crista terminalis.

The superior border of the terminal sulcus designates the transverse plane in which the SA node resides. The inferior border designates the transverse plane in which the AV node resides.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

2033516604 at GPnotebook

Anatomy of the heart

General

Surface

Internal

atria interatrial septum pectinate muscles terminal sulcus ventricles interventricular septum trabeculae carneae chordae tendineae papillary muscle valves cusps atrioventricular septum

cardiac skeleton intervenous tubercle

Chambers

Right heart	(venae cavae, coronary sinus) → right atrium (atrial appendage, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve of inferior vena cava, valve of coronary sinus) → tricuspid valve → right ventricle (infundibulum, moderator band/septomarginal trabecula) → pulmonary valve → (pulmonary artery and pulmonary circulation)

Left heart	(pulmonary veins) → left atrium (atrial appendage) → mitral valve → left ventricle → aortic valve (aortic sinus) → (aorta and systemic circulation)

Layers

Endocardium	heart valves

Myocardium	Conduction system cardiac pacemaker SA node AV node bundle of His bundle branches Purkinje fibers

Pericardial cavity	pericardial sinus

Pericardium	fibrous pericardium sternopericardial ligaments serous pericardium epicardium/visceral layer fold of left vena cava

Blood supply

Coronary circulation

This article is issued from Wikipedia - version of the 8/10/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.