16.The two upper receiving chambers of the heart are called the right and left ___. 答案: atria 17.The mitral valve has ___ cusps or leaflets that open and close. 答案: two 18.___ refers to the contraction phase of the ventricles in the heartbeat cycle. 答案: Systole 19.___ ...
1. Embolism of pulmonary arterioles and capillaries produced by the intravenous injection of starch grains results in a dilatation of the pulmonary artery and the right chambers of the heart. This has been demonstrated both by x-ray studies and direct inspection. 2. The dilatation of the pulmonar...
1.PhysiologyThe normal rhythmically occurring relaxation and dilatation of the heart chambers, especially the ventricles, during which they fill with blood. 2.The lengthening of a normally short syllable in Greek and Latin verse. [Greekdiastolē,dilation, separation, fromdiastellein,to expand:dia-,...
The cardiovascular system (CVS) is made up of the heart, blood vessels, and blood. The fundamental function of CVS is to transport substances to and from all parts of the body. The heart is the major pumping organ, pressurizing blood for circulation thro
Right ventricular dilatation and dysfunction may also be present in patients with DCM and are an adverse prognostic marker. Left atrial volume index (LAVi) above 50 mL/m2 is a characteristic echocardiographic feature of DCM. In a recent study, LV diastolic function was evaluated according to the...
The local signs of valvular disease may be absent or present. Signs of cardiac enlargement with dilatation of the chambers of the heart are present and may usually be recognized. These phenomena are usually present in varying degrees of severity, in an incompetent heart. When due to intrinsic ...
In fishes the heart is basically a simple tube which becomes subdivided into four successive chambers, the sinus venosus, atrium, ventricle, and conus arteriosus. Blood from the body enters the sinus and leaves the conus to go to the gills to be oxygenated. The ventricle supplies the main pum...
Aneurysms are persistent, localized dilatations of the vessel wall, classified according to shape or etiology. True aneurysms are formed by the dilatation of the constituents of the vessel wall which exhibits profound structural alterations. In contradis
systolic pressure- the blood pressure (as measured by a sphygmomanometer) during the contraction of the left ventricle of the heart diastolic pressure- the blood pressure (as measured by a sphygmomanometer) after the contraction of the heart while the chambers of the heart refill with blood ...
Summary The heart is the motor of blood circulation; it propels blood through the systemic and pulmonary circulatory systems by periodic contraction and dilatation of the four cardiac chambers. This chapter addresses a few fundamentals of normal heart physiology, which are necessary to understand the...