FMA73941 3D mesh
Trachea
The main airway connecting the larynx to the bronchi. Its cartilage supports keep the airway open during breathing.
The airways conduct air to the lungs, where oxygen and carbon dioxide move between air and blood. Breathing depends on pressure changes produced by respiratory muscles.
The BodyParts3D reference dataset models 119 pieces in the respiratory layer across 41 FMA concepts, including the nasal cartilages, epiglottis, pharyngeal muscles, trachea, main bronchi, and detailed segmental bronchial trees.
Conducts air from the nasal cavity, pharynx, and larynx through the trachea and bronchial tree into the lungs.
Facilitates gas exchange where oxygen moves from inhaled air into the blood and carbon dioxide moves out.
Works with respiratory muscles (such as the diaphragm) that create intrathoracic pressure changes to drive ventilation.
Review the primary anatomical landmarks below. Click Learn more to open the dedicated page for each structure, or click Select in 3D to inspect it on the interactive 3D model.
The main airway connecting the larynx to the bronchi. Its cartilage supports keep the airway open during breathing.
The composite organ of respiration in the right hemithorax (spanning 156 bronchial and vascular pieces in the atlas) where gas exchange occurs.
The composite organ of respiration in the left hemithorax (spanning 124 bronchial and vascular pieces in the atlas) where oxygen and carbon dioxide exchange between air and blood.
The primary airway branch arising from the tracheal bifurcation that conducts air into the left lung.
The primary airway branch conducting air from the trachea into the segmental bronchial tree of the right lung.
A leaf-shaped elastic cartilage structure at the entrance of the larynx that protects the airway during swallowing.
Every anatomical structure assigned to the Respiratory layer in atlas.json. Curated landmarks include a Learn more guide, and all 41 structures can be selected directly in the 3D viewer.
Launch the 3D viewer with the Respiratory activated. Orbit the camera, use the Exploded View slider to separate overlapping pieces, and click individual structures to inspect their FMA reference ID and anatomical metadata.
You have not selected any structures in the Respiratory inside the 3D viewer yet during this session. Click Explore in 3D or any structure card above to inspect a structure on the 3D model.
The airways conduct air to the lungs, where oxygen and carbon dioxide move between air and blood.
The trachea (FMA7394) is the main airway connecting the larynx to the bronchi; its cartilage supports keep the airway open.
Breathing depends on intrathoracic pressure changes produced by respiratory muscles.
Breathing depends on pressure changes produced by respiratory muscles, principally the diaphragm and intercostal muscles.
The right ventricle pumps blood to the lungs for oxygenation, and pulmonary veins return oxygenated blood to the left atrium.
Cartilage rings and elastic ligaments keep the trachea and laryngeal airways open during pressure changes.
Select an answer for each question below to verify your understanding of the respiratory.