The picture shows a group of muscle cells in the heart. All of these muscle cells beat in unison to push blood in timing with th
e rhythm of the heart, at the direction of nearby nerve cells.
These muscle cells could best be called a
A) organ.
B) tissue.
C) macromolecule.
D) organ system.
These muscle cells could best be called a
A) organ.
B) tissue.
C) macromolecule.
D) organ system.
2 answers:
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