Oxygen uptake = cardiac output \\x\\ _____________________________. The period d

Question

Oxygen uptake = cardiac output x _____________________________.

The period during which the ventricle relaxes is referred to as ________________________.

The _____________________________ is referred to as the heart’s pacemaker and controls the heart rate.

With very heavy exercise, approximately ______________% of the available blood volume is directed to the muscles and skin.

The percentage of the ventricular volume pumped out of the left ventricle with each contraction is called

the ____________

During iso-volumetric ventricular contraction the ______________ has depolarized, but the pressure in the

ventricle is less than   ____________________

Explanation / Answer

1. Oxygen uptake = cardiac output × arteriovenous Oxygen content difference .....i.e... [C(a-vDo2)]

2. Period during which ventricle relaxes is known as ventricular diastole.

3. Sinuatrial node os known as pacemaker of the heart.

4. With very heavy exercise muscle receive 71% and skin 12% and with maximal exercise muscle receive 88% and skin 2% of the available blood volume....if we assume cardiac output at rest is 5 litre per min.

5.it is called as ejection fraction of the left centricle..

6.during iso- volumetric ventricular contraction the ventricles has depolarized but the pressure in the ventricle is less than Semilunar valve pressure..

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