I just went through a miscarriage, and they tested my urine tooday for an infection because I am having some low back pain. My protein levels were slightly elevated. Does that mean something is wrong ...
i had to go into the ER a while back for pain. on arrival my blood pressure was 181/101 by the time i was released it was 150/92. i have been having my mom monitor it consecutively at home (she is a ...
closure of the heart valves. s1 is closure of atrioventricular valves
s2 is closure of semilunar valves
The first heart sound or "lub" results from closure of the tricuspid and mitral valves. It is a rather low-pitched and a relatively long sound which, as indicated in, represents the beginning of ventricular systole.
The second heart sound, or "dub," marks the beginning of ventricular diastole. It is produced by closure of the aortic and pulmonary (pulmonic) semilunar vanes when the intraventricular pressure begins to fall
It's your heart pumping the blood in and out through your heart.