In the muscular substance of the heart, under the endocardium, there is almost constantly noticed ecchymosis.
The endocardium may be stained from the imbibition of blood.
Endocarditis, is inflammation of the endocardium, which is the lining membrane of the internal surface of the heart.
By extension of inflammation of the endocardium or pericardium the muscle of the heart may become involved.
This fall in blood pressure is commonly attributed to irritation of the endocardium.
In acute inflammation we find a thickening and a roughened appearance of the endocardium throughout the cavities of the heart.
endocardium, en-do-kar′di-um, n. the lining membrane of the heart.
They firmly adhere to the endocardium, and when detached from it give it a torn appearance.
The endocardium is often blotched to a greater or less extent by sanguineous imbibition.
When the membrane which lines the cavities of the heart—the endocardium— suffers inflammation, the disease is called endocarditis.
endocardium en·do·car·di·um (ěn'dō-kär'dē-əm)
n. pl. en·do·car·di·a (-dē-ə)
The thin serous membrane, composed of endothelial and subendothelial tissue, that lines the interior of the heart.