Infraorbital nerve

Infraorbital nerve
Left orbicularis oculi, seen from behind. (Infraorbital nerve labeled at lower left.)
Sensory areas of the head, showing the general distribution of the three divisions of the fifth nerve. (Infraorbital nerve labeled at center left, at the nose.)
Details
From	maxillary nerve
Identifiers
Latin	Nervus infraorbitalis
Dorlands /Elsevier	n_05/12565913
TA	A14.2.01.059
FMA	52978
Anatomical terms of neuroanatomy

After the maxillary nerve enters the infraorbital canal, the nerve is frequently called the infraorbital nerve. This nerve innervates (sensory) the lower eyelid, upper lip, and part of the nasal vestibule and exits the infraorbital foramen of the maxilla. There is a cross innervation of this nerve on the other side of jaw.

Clinical relevance

The infraorbital nerve block is a type of local anesthetic nerve block used to induce analgesia in the distribution of the nerve for whatever purpose.

After a fracture of the floor of the orbit, the infraorbital nerve may become trapped, producing an area of anaesthesia under the orbital rim.

See also

• Infraorbital artery
• External nasal nerve
• Internal nasal branches of infraorbital nerve

Additional images

• 
  Mandibular division of the trigeminal nerve.
• 
  The nerves of the scalp, face, and side of neck.
• 
  Outline of side of face, showing chief surface markings.
• 
  An illustration of the path of the maxillary nerve.
• 
  Infaorbital and buccal nerve.Superficial dissection.Lateral view.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• Anatomy photo:33:08-0104 at the SUNY Downstate Medical Center
• lesson3 at The Anatomy Lesson by Wesley Norman (Georgetown University)
• MedEd at Loyola GrossAnatomy/h_n/cn/cn1/cnb2.htm
• lesson3 at The Anatomy Lesson by Wesley Norman (Georgetown University) (orbit6)