Cardiovascular System

Question 6 - Single Best Answer

Identify the cell at the tip of the arrow:

A) smooth muscle cell

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By noting the cardiac muscle fibers on the edge of the picture, you can identify the location of this tissue as being from the heart. The only smooth muscle in the heart is located in the walls of blood vessels. In addition, smooth muscle cells would be smaller and have less cytoplasm than purkinje fibers.