Myoepithelial cells likely perform which function______________?
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Answer: D. All of the above
Explanation
Myoepithelial cells perform multiple essential roles within salivary gland acini. They contract actively to help expel saliva from secretory end pieces. They provide structural support and help maintain secretory unit integrity. Myoepithelial cells are specialized stellate cells surrounding salivary acini and ducts. They contain smooth muscle proteins including actin and myosin filaments. Their contractile activity is stimulated by autonomic nervous system signals.
Salivary gland dysfunction often involves impairment of these contractile cells. Histologists identify myoepithelial cells using specific immunohistochemical staining techniques. Their supportive functions ensure efficient delivery of saliva into oral ducts. Initiating contraction is only one of several vital functions they perform. Supporting acinar end pieces is equally important alongside active expulsion. Providing organizational signals to secretory cells completes their full functional spectrum.
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