The nose is an integral part of respiration and olfactory sensation. Both roles include varying components and techniques that work effectively and efficiently.Know More
The nose is a cartilaginous organ on the face responsible for inhalation and exhalation of air and processing of scents and smells. Air is inhaled through the nose, and nose hairs catch the larger particles of dust and debris. Cilia and mucous in the nasal passages humidify, warm the air and catch any remaining foreign bodies before the inhaled air is passed down through the pharynx, larynx and trachea into the lungs.
Smells are processed simultaneously with respiration as the inhaled air passes over chemoreceptors, otherwise known as the olfactory epithelium. Soluble molecules are absorbed by the chemoreceptors, while proteins collect the non-soluble molecules and transport them to the chemoreceptors. All of this information is transported by axons in the olfactory nerve to the olfactory bulb. The olfactory bulb is responsible for conveying messages to the brain to organize and understand the scents inhaled.
Once all of this has occurred, the lungs exhale the left over air out through the nose to complete the cycle. In this manner, the nose is responsible for both inhalation and exhalation.Learn more about Human Anatomy
The ribs have three important functions: support, respiration and protection. There are a total of 24 ribs, which are all attached to the thoracic vertebrae. The top seven are referred to as true ribs, while the bottom five are called false ribs.Full Answer >
According to MedicineNet.com, the nasal passage is the channel for nose airflow, carrying most of the air inhaled. The nasal passage is responsible for ridding any harmful pollutants inhaled from the air. The nasal passages also contain the olfactory membranes that provide information regarding airflow to other sensory organs.Full Answer >
The trachea is the tube in the throat that connects the mouth and nose to the lungs. It is also called a windpipe, and its function is to transport the air a person breathes in through his nose or mouth into the lungs. Without the trachea, the lungs do not receive oxygen, and humans cannot survive.Full Answer >
WebMD explains that the primary purpose of mucus is to coat the passageways of the nose, throat, sinuses, lungs and gastrointestinal tract and keep them from becoming dry. If these passages dried out, their surfaces could crack, potentially providing pathogens with an entryway into the body. Additionally, the mucus lining these structures traps and contains dirt and other foreign particles so that they do not reach the lungs.Full Answer >