What is piriform recess?

The piriform recess is a small, pouch-like cavity located in the nasal cavity. It is situated at the upper part of the lateral wall of the nasal cavity just behind the nasal vestibule. The piriform recess is named after its pear-shaped appearance, with "piriform" meaning pear-shaped in Latin.

The main function of the piriform recess is to help humidify and warm the air as it passes through the nasal cavity before reaching the lungs. It also plays a role in filtering out particles and bacteria from the air, helping to protect the respiratory system from infections.

The piriform recess is lined with mucous membranes that secrete mucus to trap particles and help moisten the air. It also contains cilia, which are tiny hair-like structures that help move mucus and trapped particles out of the respiratory system.

Overall, the piriform recess is an important anatomical feature of the nasal cavity that plays a crucial role in the process of breathing and maintaining good respiratory health.