Assertion: endocardium's layer | /r/CapableOf | wrap around atrium
Facets:
Source sentences:
text: This tissue arrangement forms concentrated layers that wrap around the atria and spiral into the walls of the ventricles, resulting in squeezing and twisting contractions that increase the pumping efficiency.
text: This tissue arrangement forms concentrated layers that wrap around the atria and spiral into the walls of the ventricles, resulting in squeezing and twisting contractions that increase the pumping efficiency.