Question

During ventricular fibrillation…

	a.	the sino-atrial node does not depolarize
	b.	the ventricles do not contract rhythmically
	c.	the heart muscle is deprived of oxygen
	d.	all of these statements are true except a

If the volume of chamber containing a quantity of liquid decreases, _____.

	a.	its pressure increases
	b.	its pressure decreases
	c.	it cannot be forced out of an opening
	d.	it can more easily have more liquid forced into it

Normal blood pressure is defined as _____ when measured with a spygmomanometer.

	a.	120/80 mm of mercury
	b.	170/80 mm of mercury
	c.	90/80 mm of mercury
	d.	120/40 mm of mercury

Chronic high blood pressure (hypertension) can cause _____.

	a.	cardiac hypertrophy
	b.	congestive heart failure
	c.	peripheral edema
	d.	chronic high blood pressure can cause all of these conditions

Answer 1

Question no 1)

Answer is option d

Yes option b is because when ventricular fibrillation occur an abnormal electrical activity occur at the ventricle region, this will cause the ventricles to contract abnormaly and not rhythmically

Option a is correct as the sinoatrial nose depolarisation will not occur like in normal situation due to abnormal electrical conduction in lower ventricle part

Option c is correct as the O2 supply to heart will reduce and it will cause depriving of o2