What are small spaces in the skull thought to regulate the temperature and humidity of the air taken in to the body called?

The correct answer to this question is Sinuses. They are a part of the head. Many only notice them when there is a problem. Sinuses are hollow spaces and can be found behind the cheeks, nose, and lower part of the forehead. The job of sinuses is to product mucus. This mucus acts as a protective lining for the throat, nose, and mouth.

The common issue with sinuses that most are familiar with is the condition called sinusitis. This is when the sinuses are inflammed and is mainly caused by an infection. Over 30 million are diagnosed each year with sinusitis.

The sinuses are composed of small spaces which sit inside the human and animal skull. They help regulate the temperature and humidity of air taken into the body. The larger sinus cavities are about one inch across, but the smaller ones are more complex.

The sinuses are lined with pink tissue called mucosa and typically, the sinuses are empty except for a thin layer of mucus. There are structures within the sinuses which help to filter the air within them. In anatomy, the word sinus is used to refer to a system of hollow cavities, and they are most important for health and comfort.