Circulatory system

inner layer of heart

• mayocardium

• pericardium

• endocardium

• none of the aboe

the organ that pump blood throughout the body

• lung

• heart

• kidney

• liver

The heart through-------------transports nutrition,hormones, oxygen throughout the body.

• capillaries

• veins

• nerves

• blood vessels

The blood which has less quantity of oxygen is?

• oxygenated blood

• deoxygenated blood

• both oxygenated and deoxygenated blood

• all the above

The specialized muscle that only present in heart are .

• voluntary muscle

• involuntary muscle

• cardiac muscle

• contracting muscle

Without the -------------- there would have been friction between the layers of heart during contraction

• endocardium

• mayocardium

• pericardium

• epicardium

correct sequence of layer of heart from inner to outer.

• epicardium-myocardium-pericardium

• epicardium-myocardium-endocardium

• endocardium-epicardium-myocardium

• endocardium

  -myocardium-pericardium

______ is the responsible for producing the sound of heart beat.

• chambers of heart

• valves of heart

• arteries of heart

• veins of heart

There is backflow of blood from the right ventricle to the right atrium due to the presence of a structure called------

• valve

• aorta

• artery

• vale

blood flows through

• artery

• vein

• capillary

• all of the above