GROSS ANATOMY

Detailed explanation-1: -Air enters the nasal cavity from the outside through two openings: the nostrils or external nares. The openings from the nasal cavity into the pharynx are the internal nares.

Detailed explanation-2: -The nasal cavity is a large, air-filled space above and behind the nose in the middle of the face. The nasal septum divides the cavity into two cavities, also known as fossae. Each cavity is the continuation of one of the two nostrils.

Detailed explanation-3: -Look in a mirror, and you’ll notice that most sensory organs come in pairs. Having two eyes lets us perceive depth, and two ears are useful for locating sounds. But why two nostrils? Now neuroscientists have found evidence that this expands the range of scents we can smell.

Detailed explanation-4: -(NAY-zul KA-vuh-tee) The space inside the nose. The nasal cavity lies above the bone that forms the roof of the mouth and curves down at the back to join the throat. It is divided into two sections called nasal passages. Air moves through these passages during breathing.