Muscular System

Question 4 - Single Best Answer

Identify the cell at the tip of the arrow:

D) cardiac muscle cell

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Although purkinje fibers are specialized cardiac muscle cells, they have different features. Cardiac muscle cells are more numerous in the heart and have a stippled appearance due to their organized myofibrils. Purkinje fibers have a disorganized arrangement of myofibrils and have a larger nucleus. There are several cardiac muscle cells present on the edge of the photomicrograph.