Answer :
It is a double membrane outer covering of the heart ,,outer membrane is fibrous while inner is serous...
The instrument used to measure blood pressure is Sphygmomanometer...
The instrument used to measure blood pressure is Sphygmomanometer...
Pericardium, the pericardium or pericardial, which surrounds the heart and the heart together with the main blood vessels (aorta, vena cava, etc..) Double-walled sac that covers the roots.
sphygmomanometer
sphygmomanometer
