The dense bodies found in smooth muscle cells are functionally and anatomically analogous to which structure found in skeletal muscle cells?
a. A-band
b. Intercalated disks
c. Mitochondria
d. Sarcoplasmic reticulum
e. Z-line
ANS: E
In both smooth and skeletal muscle, aggregations of the protein, ?-actinin (in the Z-line in skeletal muscle and in dense bodies in smooth muscle), anchors and organize actin filaments
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