Which of the following describes the ASA nerve?
A) Terminal branch of the maxillary nerve exiting the infraorbital foramen to supply sensation to the upper lip, lower side of the nose, and dental plexus of the canine and incisors
B) Terminal branch of the maxillary nerve branching from the infraorbital nerve within the infraorbital canal 6 to 10 mm prior to the infraorbital foramen to supply sensation to the dental plexus of the canine, central and lateral incisors
C) Descends along the external surface of the maxilla and supplies sensation to the dental plexus of the canine, central and lateral incisors
D) Descends through anterior wall of the maxillary sinus to supply sensation to the dental plexus of the premolars, canine, lateral and central incisors

Question

Quizplus · Accepted Answer

The ASA nerve, or Anterior Superior Alveolar nerve, is a terminal branch of the maxillary nerve that branches from the infraorbital nerve within the infraorbital canal 6 to 10 mm prior to the infraorbital foramen. It supplies sensation to the dental plexus of the canine, central, and lateral incisors.

Which of the Following Describes the ASA Nerve