Assertion: cardiac muscle's muscle cell | /r/HasProperty | arranged in layer
Facets:
value: at the top of the image
type: LOCATION
value: to contract in the direction
type: PURPOSE
Source sentences:
text: cardiac muscle cardiac muscle - cells of the myocardium, arranged in layers that are tightly bound together and completely encircle the blood-filled chambers of the heart (when the walls of the chamber contract, they come together like a squeezing fist and exert pressure on the blood they enclose) - every heart cells contracts with every beat of the heart . . .
text: In the layer at the top of the image (layer 1), the smooth muscle cells are arranged to contract in the direction indicated.