Subcutaneous fistulectomy

Decerebrate posturing:

A) is characterized by abnormal flexion of the arms and extension of the lower extremities. B) is considered less severe than decorticate posturing, because it indicates that the brainstem is intact. C) is an early clinical finding, because it occurs with minimal increases in intracranial pressure. D) is a more severe finding than decorticate posturing, as it indicates damage in or near the brainstem.

Which sinus cavity would be visible if a Water's method was performed with the patient's mouth open?

ethmoid sphenoid maxillary frontal