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anatomy - 3 Questions
Jaw jerk reflex is mediated by:1). V32). VII3). IX4). XII
The jaw jerk reflex is mediated by V3 and is exaggerated in upper motor neuron lesions above the mid-pons.
The pterygoid plexus is clinically important for:1) Spread of infection to cavernous sinus2) Control of bleeding during maxillary tuberosity fracture3) Both 1 and 24) None
The valveless pterygoid plexus provides a route for infection to reach the cavernous sinus and may cause severe bleeding when injured during maxillary tuberosity or Le Fort fractures.
The facial vein has no valves and communicates with cavernous sinus via:1) Superior ophthalmic vein and deep facial vein2) Inferior ophthalmic vein only3) Pterygoid plexus only4) None
The facial vein communicates with the cavernous sinus through the angular and superior ophthalmic veins and through the deep facial vein and pterygoid plexus.
MCQ