GROSS ANATOMY

Detailed explanation-1: -The nose has two holes called nostrils. The nostrils and the nasal passages are separated by a wall called the septum (say: SEP-tum). Deep inside your nose, close to your skull, your septum is made of very thin pieces of bone.

Detailed explanation-2: -The nasal cavity is divided into right and left halves by the nasal septum; each half opens on the face via the nares or nostrils and communicates behind with the nasopharynx through the posterior nasal apertures or the choanae.

Detailed explanation-3: -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-4: -Septum: The septum is made of bone and firm cartilage. It runs down the center of your nose and separates the two nasal cavities.

Detailed explanation-5: -Maxillary bone (the crest) Perpendicular plate of ethmoid bone.