Lesser palatine foramina

Lesser Palatine Foramina is a term used in anatomy to describe a pair of small openings located in the hard palate of the human skull. These foramina, or holes, allow for the passage of the lesser palatine nerves and vessels, which are responsible for providing sensory innervation to the soft palate and tonsils.

Structure

The lesser palatine foramina are located in the posterior part of the hard palate, near the vomer bone. They are usually found in pairs, although the exact number can vary. Each foramen is a small, round opening that leads into a canal, known as the lesser palatine canal.

The lesser palatine foramina are connected to the pterygopalatine fossa via the lesser palatine canals. These canals run through the palatine bone and open into the oral cavity through the lesser palatine foramina.

Function

The primary function of the lesser palatine foramina is to provide a pathway for the lesser palatine nerves and vessels. These nerves, which are branches of the maxillary nerve, provide sensory innervation to the soft palate and tonsils. The vessels that pass through the foramina supply blood to the same areas.

Clinical significance

Due to their location and the structures they contain, the lesser palatine foramina can be involved in various medical conditions. For example, inflammation or infection in the area can lead to pain or discomfort in the soft palate and tonsils. Additionally, damage to the lesser palatine nerves can result in loss of sensation in these areas.

See also

• Greater palatine foramen
• Palatine bone
• Maxillary nerve

References

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  Gray's Anatomy illustration of the lesser palatine foramina