Mostly air .
The paired nares are another term for the nasal openings on a pig. These nares take in air to the sinuses.
For the most part, frogs breathe air through the mouth, and utilize internal nares when doing so outside of the water. In the water, they can put just enough of the external nares above water, but this is more important to get rid of carbon dioxide, as frogs can diffuse oxygen from the water through their skin.
b. Nasopharynx does not apply to the nose. The nasopharynx is part of the throat located behind the nose, whereas the other options (nostrils, nasal septum, external nares, nasal cavity) are all structures within the nose.
Nostrils → Nasal Cavity → Pharynx → Larynx → Trachea → Main Bronchus → Lobar Bronchiole → Segmental Bronchus → Bronchiole → Terminal Bronchiole → Respiratory Bronchiole → Alveolar Duct → Atrium → Alveolus
Internal nares, also known as choanae, help in connecting the nasal cavity to the throat, allowing for the passage of air between the two regions. This connection is essential for functions such as breathing, smelling, and tasting.
nares are nostrils. the maxillary bones form the lateral margins of external nares/nostrils
External Nares
external nares
External nares ( Nostrils) are the openings formed by the external nose that open into the nasal cavity.
External nares are openings in the nostrils that allow air to enter the respiratory system during breathing. They also help filter and humidify the air before it reaches the lungs. Additionally, external nares play a role in the olfaction process by allowing smell molecules to enter the nasal cavity for detection.
Nostril
2
external nares
The nostrils or nasal openings, -- the anterior nares being the external or proper nostrils, and the posterior nares, the openings of the nasal cavities into the mouth or pharynx.
Nares are the external openings of the nose (human, animal, or reptile). These are also known as nostrils or the nasal passages.
Nares are the openings of the nasal cavity, commonly called nostrils. We have two sets of openings called anterior and posterior nares that move air through the nasal cavity into the pharynx and lungs.
Respiratory system.