Nose Anatomy and Function Overview

What is one of the primary functions of the nasal cavity?

Which region of the nose is primarily responsible for the sense of smell?

What is the function of the turbinates in the nasal cavity?

How do the paranasal sinuses support the respiratory system?

Which of the following paranasal sinuses is located behind the nose?

What is suggested as one of the main functions of the paranasal sinuses?

What role does the vestibule of the nose play?

Which statement about the nasal cavity's contribution to respiration is incorrect?

Nose Anatomy and Function

The nasal cavity has four main functions: warming and humidifying inhaled air, trapping and removing pathogens and particulates, providing a sense of smell, and draining and clearing the paranasal sinuses and tear ducts.
The nose is divided into three main regions: the vestibule, respiratory region, and olfactory region.
The vestibule contains hairs for filtering dust and other particulates.
The respiratory region warms and humidifies inhaled air, slowing it down using turbinates (conchae). Air reaches nearly 100% humidity at body temperature.
The olfactory region contains olfactory receptors linked to the sense of smell, as well as the detection of harmful substances or spoiled food.

Paranasal Sinuses

Paranasal sinuses are air-filled extensions of the respiratory region of the nasal cavity.
There are four paired sinuses: frontal, sphenoid, ethmoid, and maxillary.
These sinuses are named after the bones they reside within.
The exact function of the sinuses is debated, but suggested functions include humidifying inspired air, reducing skull weight, supporting the immune system of the nasal cavity, and resonating speech.

This quiz explores the anatomy and functions of the nose, including the nasal cavity's role in breathing and smell. Learn about the different regions of the nose, such as the vestibule, respiratory, and olfactory regions, as well as the paranasal sinuses and their functions.