Conus arteriosus

From Wikipedia, the free encyclopedia

Conus arteriosus

Sternocostal surface of heart. (Conus arteriosus visible at top center.)
Latin	Conus arteriosus
Gray's	subject #138 531

The conus arteriosus is a conical pouch formed from the upper and left angle of the right ventricle in the chordate heart, from which the pulmonary trunk arises.

A tendinous band, which may be named the tendon of the conus arteriosus, extends upward from the right atrioventricular fibrous ring and connects the posterior surface of the conus arteriosus to the aorta. The conus arteriosus is also called the infundibulum, and it is the entrance from the right ventricle into the pulmonary artery and pulmonary trunk. The wall of the infundibulum is smooth.

Additional images

Front view of human heart and lungs.

External links

-254803911 at GPnotebook
Conus+arteriosus at eMedicine Dictionary

This article incorporates text from a public domain edition of Gray's Anatomy.

Anatomy of torso, cardiovascular system: heart (TA A12.1, TH H3.09.01, GA 5.524)

General

Surface

Internal

atria interatrial septum musculi pectinati sulcus terminalis 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 (conus arteriosus, 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 Purkinje fibers

Pericardial cavity	pericardial sinus

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

M: HRT

anat/phys/devp

noco/cong/tumr, sysi/epon, injr

proc, drug (C1A/1B/1C/1D), blte

This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.