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daser333 [38]
2 years ago
14

If u looked at a SA cells and cardiac muscle cells under a microscope, do u think they would look the same or different from eac

h other? Explain ur reasoning HELP MEE PLSSSSS
Biology
1 answer:
Brilliant_brown [7]2 years ago
3 0

Answer:

They look a little bit different. SA cells contain fewer mitochondria, fewer myofibers, and a smaller sarcoplasmic reticulum. This means that the SA node cells are less equipped to contract compared to the atrial and ventricular cells.

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