The members of the autosome pairs are truly homologous; that is, each member of a pair contains a full complement of the same genes (albeit, perhaps, in different allelic forms). The sex chromosomes, on the other hand, do not constitute a homologous pair
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The nasal cavity refers to the inside of the nose. It is a hollow space inside the nose and skull, which is surrounded with hairs and mucous membrane. The main function of the nasal cavity is to moisturize, warm, and filter the air getting inside the body before it gets inside the lungs.
The superior body of the nasal cavity is formed by four bones, that is, from anterior to posterior. These are:
1. Nasal
2. Frontal
3. Ethmoid (cribriform plate) and
4. Sphenoid (body)