A single opening of your nose is known as a nostril, nostrils is the plural form. Your nostrils are two channels through the nose, separated by the septum.
The nostrils / nares are the openings in the nose.
The two openings to our noses are the nostrils.
The structure that connects the two sides of your nose is called the nasal septum.
The opening is called a stomata, which is regulated by two guard cells.
Nostrils
The two nose holes are called nostrils. They are openings leading to the nasal cavity, which is part of the respiratory system.
Three
Upper Part of the nose..One of the two channels of nose.
The nose is covered anteriorly by the two bilateral nasal bones,which form the alar of the nose.Inferiorly it is fomed by the bones of the hard palate and medially by the nasal septum.
The area is called the philcrum. The pit in the middle of the philtrum is called the sulcus. The two ridges (lines as you say) are called the philtral rdiges. The philtrum joins the nose at the area called the columella. The philtrum joins the lip at the place called the tubercle.
two eyes, two ears, two legs, one nose, & one mouth
Yes, the openings in the human nose are called nares or nostrils. They allow air to enter and leave the nasal cavity during breathing.