The process of blood clot formation within the circulatory system is known as:

Statement-$I$ :- The body has the ability to alter the stroke volume as well as heart rate and thereby the cardiac output.
Statement-$II$ :- During each cardiac cycle two prominent sounds are produced which can not be easily heard through a stethoscope.

Which of the following are the pulse points of the lower limb?
$I$. Brachial $\quad$ $II$. Radial
$III$. Posterior tibial $\quad$ $IV$. Dorsalis pedis
$V$. Femoral $\quad$ $VI$. Popliteal
Select the correct option.

If cardiac output is $4200 \text{ ml/min}$,then $x$ beats/min is the heart rate and $y$ is the term for pulse rate.

Plethysmograph is used to measure

The $pH$ of blood in an artery and a vein is: