What is the spatial relationship between the branches of the facial nerve and the parotid gland __________________ ?
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Answer: C. In the substance of parotid
Explanation
The branches of the facial nerve pass directly through the substance of the parotid gland during their course. This unique anatomical arrangement places the neural network embedded within salivary gland tissue. Dissection confirms the parotid parenchyma surrounds the facial nerve branches as they cross the face. The facial nerve is cranial nerve VII controlling all muscles of facial expression. The parotid gland is a major paired salivary gland located anterior to the external ear canal. Passing through the gland allows the nerve trunk to divide into multiple peripheral branches.
Surgeons must carefully navigate around the facial nerve when resecting tumors within the parotid gland. Parotid gland infections or masses can occasionally lead to localized facial nerve compression and weakness. Medical students study this specific glandular relationship to prepare for head and neck surgical procedures. Deep describes an incorrect spatial relation because the nerve is embedded within rather than deep to the gland. Superficial is inaccurate since the nerve runs right through the middle of the parotid tissue parenchyma. None is incorrect because the branches definitely occupy the substance of the parotid gland.
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