EVERYDAY SCIENCE

Detailed explanation-1: -These sinuses, which have the same names as the bones in which they are located, surround the nasal cavity and open into it. They function to reduce the weight of the skull, to produce mucus, and to influence voice quality by acting as resonating chambers.

Detailed explanation-2: -Paranasal sinuses are named after the bones that contain them: frontal (the lower forehead), maxillary (cheekbones), ethmoid (beside the upper nose), and sphenoid (behind the nose).

Detailed explanation-3: -The primary function of the ethmoid sinus, like all the sinus cavities in the skull, is to provide lubrication (mucus) to the inner nose. In addition to creating mucus, the sinuses-including the ethmoid sinus-reduce the skull’s overall weight and make one’s voice more resonant as they grow in size during puberty.

Detailed explanation-4: -The paranasal sinuses (the hollow spaces in the skull and facial bones around the nose) are air-filled cavities within the frontal, ethmoidal, sphenoidal, and maxillary bones.

Detailed explanation-5: -Structure of the paranasal sinuses The paranasal sinuses are hollow spaces filled with air, located around the nose inside the skull. The paranasal sinuses are connected to one another and to the nasal cavity.