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Lung Anatomy - Coggle Diagram
Lung Anatomy
Nasal Cavity
Functions to humidify, warm, filter, and act as a conduit for inspired air, as well as protect the respiratory tract through the use of the mucociliary system.
It also houses the receptors responsible for olfaction. It is lined with a mucous membrane that helps keep your nose moist by making mucus so you won't get nosebleeds from a dry nose.
There are also little hairs that help filter the air you breathe in, blocking dirt and dust from getting into your lungs.
Epiglottis
Its main function is to close over the windpipe (trachea) while you're eating to prevent food entering your airway.
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Pharynx
A muscular tube passageway that extends from the base of the skull to the level of the sixth cervical vertebra.
There are three parts of the pharynx, the nasopharynx at the top, the oropharynx, which is just behind the mouth and the laryngopharynx, which sits inferiorly
It serves both the respiratory and digestive systems by receiving air from the nasal cavity and air, food, and water from the oral cavity.
Larynx
Serves to protect the lower airways, facilitates respiration, and plays a key role in phonation. It is important in voice production and allowing air into and out of the lungs.
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Trachea
The trachea is one part of your airway system. Airways are pipes that carry oxygen-rich air to your lungs. They also carry carbon dioxide, a waste gas, out of your lungs.
It is a long pipe and there are rings of cartilage (c-shaped cartilaginous rings) around the trachea. It consists of smooth muscle.
When you inhale, air travels from your nose, through your larynx, and down your windpipe. It connects the larynx to the lungs.
Bronchi
The tubes of the primary bronchi branch off from the bottom of the trachea. These branches subdivide further into secondary and tertiary bronchi and then into the bronchioles.
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Bronchioles
They deliver air to the exchange surfaces of the lungs. Alveolar ducts are distal continuations of the respiratory bronchioles.
Alveoli
Where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
Gas exchange-oxygen breathed in from the air passes through the alveoli and into the blood and travels to the tissues throughout the body.
Each alveolus has an increased surface area wall. The alveolus wall is only 1 cell thick. Alveoli are in close contact with capillary blood vessels. Elastic fibres allow the alveoli to expand in inhalation and spring back on exhalation.