pericardiacophrenic (per"ikardiakofrenik)

[ distributed to pericardium and the diaphragm. taining to the pericardium, or having its char acter. Also pericardian, pericardiac, and rare ly pericardic. Pericardial arteries, small branches given off by the internal mammary and thoracic aorta to the pericardium.-Pericardial cavity or space, in in sects, dorsal division of the abdominal cavity, containing the heart or dorsal ve el in many groups it is separated from the rest of the abdomen by the alary muscles, which collectively have been termed the pericardial septum. Pericardial pleura, that part of the pleura which is at septum, in insects, the partition formed by the alary muscles between the cavity of the pericardium and the general abdominal cavity.-Pericardial veins, small tributaries from the pericardium to the large azygous vein. pericardian (per-i-kär'di-an), a. [ INL the perper cardium + -it is.] Inflammation of the per i car pericardium (per-i-kärdi-um), n.; pl. pericar dia (-a). [= F. péricarde = Sp. Pg. It. pericar pericardium, pericardium , membrane around the heart; prop. neut. of περικάρδιος, around or near the heart, zoöl.: ( a ) A somewhat conically shaped membranous sac, inclosing the heart and the origin of the great ve els. It is of two layers, outer fibrous one, dense and unyielding in structure, and an inner serous one, reflected on the surface of the viscus. See cut under thorax. IMG:content-2685.png:[blocks in formation] 4396 canal, seldom or never contains blood-lymph, and does not communicate with other body-cavities, but opens upon the through the cuts Lamelli branch i at a. (d) A membranous sac inclosing the heart or dorsal ve el of a spider. Ligaments attached to the pericardium are connected with the envelops of the tracheæ, and by the dilatation and contraction of the heart the tracheæ are opened and closed. - Cardiac pericardium, the reflected serous membrane covering the heart; the epicardium.