MICROANATOMY

Detailed explanation-1: -Air enters the respiratory system through nostrils. Nostrils, also called external nares, are the two external openings of the nasal cavity. They admit air to the lungs and smell to the olfactory nerves.

Detailed explanation-2: -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-3: -Nostrils (nares): These are the openings to the nasal cavities that are on the face. 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-4: -The nose is the only part of the respiratory system that is visible externally and is the route for air entry into the respiratory system. Air is drawn in via the nostrils or external nares and enters the large nasal cavity, which is divided into two by the nasal septum.

Detailed explanation-5: -Small openings connect them to the nasal cavity. The sinuses help to regulate the temperature and humidity of air your breathe in, as well as to lighten the bone structure of the head and to give tone to your voice. The NASAL CAVITY (nose) is the best entrance for outside air into your respiratory system.