"The inflow part of the ventricle receives blood from the right atrium via the tricuspid valve. The fibrous ring surrounding the valve forms part of the fibrous skeleton of the heart. Superiorly the chamber tapers as the funnel-shaped outflow tract, known as the conus arteriosus (or infundibulum), which lacks trabeculae and continues beyond the pulmonary valve as the pulmonary trunk 8."
"The interior ventricular surface has irregular muscular ridges known as trabeculae carneae."
"A prominent trabecula, the supraventricular crest, separates the trabeculated inferior ventricle from the smooth wall of the right ventricular outflow tract. It acts to redirect blood approximately 140° from the inflow tract to the outflow tract."
"The inflow part of the ventricle receives blood from the right atrium via the tricuspid valve. The fibrous ring surrounding the valve forms part of the fibrous skeleton of the heart. Superiorly the chamber tapers as the funnel-shaped outflow tract, known as the conus arteriosus (or infundibulum), which lacks trabeculae and continues beyond the pulmonary valve as the pulmonary trunk 8."
"The inflow part of the ventricle receives blood from the right atrium via the tricuspid valve. The fibrous ring surrounding the valve forms part of the fibrous skeleton of the heart. Superiorly the chamber tapers as the funnel-shaped outflow tract, known as the conus arteriosus (or infundibulum), which lacks trabeculae and continues beyond the pulmonary valve as the pulmonary trunk 8."
"The inflow part of the ventricle receives blood from the right atrium via the tricuspid valve. The fibrous ring surrounding the valve forms part of the fibrous skeleton of the heart. Superiorly the chamber tapers as the funnel-shaped outflow tract, known as the conus arteriosus (or infundibulum), which lacks trabeculae and continues beyond the pulmonary valve as the pulmonary trunk 8."
"Arising from the apical aspect of the interventricular septum, the septomarginal trabecula (or moderator band) extends to the anterior papillary muscle and contains the right branch of the atrioventricular (AV) bundle."
"Arising from the apical aspect of the interventricular septum, the septomarginal trabecula (or moderator band) extends to the anterior papillary muscle and contains the right branch of the atrioventricular (AV) bundle."
"Papillary Muscles"
"Ebstein anomaly"
"Uhl anomaly"
Expected headings
"Trabeculae carneae"
"Papillary Muscles"
"Function"
"The right ventricle (RV) is the most anterior of the four heart chambers. It receives deoxygenated blood from the right atrium (RA) and pumps it into the pulmonary circulation. During diastole, blood enters the right ventricle through the atrioventricular orifice through an open tricuspid valve (TV). During systole, blood is ejected through the open pulmonary valve (PV) into the pulmonary trunk."
"There are three papillary muscles that attach to the leaflets of the tricuspid valve:"
"Contraction of the right ventricle occurs in sequence, initiated by the inlet and apical regions followed by outflow/infundibular contraction. In contrast to the left ventricle, longitudinal shortening is the primary contractile determinant of right ventricular stroke volume; this facet of right ventricular function is appreciated clinically by the excursion of the tricuspid annulus, drawn toward the apex with each systole. An inward "bellows-like" motion of the right ventricular free wall and traction from left ventricular contraction also contribute to overall systolic function 7."
"The right ventricle ejects into a low-impedance, highly distensible vascular bed, achieving an equal cardiac output to the left ventricle, albeit with one-sixth the stroke work required. These characteristics of the pulmonary arterial circulation, representing the right ventricular afterload, explain in part the unique features of right ventricular ejection in health; the lower pressures result in minimal isovolumic contraction, and the capacious upstream vasculature allows flow to continue during the pressure decline in late systole. This "hangout" phenomenon may account for more than half of right ventricular output 6."