|The hollow part of the bronchus through which air is conducted.
|Tiny air sacs where gas exchange occurs, connected by bronchioles.
|The uppermost part of the lung, located just below the collarbone.
|The bottom part of the lung that rests on the diaphragm.
|The smallest airways leading directly to the alveoli.
|A major air passage of the lungs that branches from the trachea.
|Structural supports that prevent the airway from collapsing.
|Lining of the bronchus made of ciliated epithelial cells that propel mucus.
|Ducts connected to mucous glands, secreting mucus onto the bronchus lining.
|A medial region on each lung where the bronchi, blood vessels, and nerves enter and exit.
|The central airway passage within the bronchus.
|Glands that produce mucus to trap debris and microorganisms.
|The artery carrying deoxygenated blood to the lungs for oxygenation.
|The vein carrying oxygenated blood away from the lungs back to the heart.
|Branches of the primary bronchus that further subdivide into smaller passages.
|The windpipe, a tubular structure that facilitates the passage of air to the lungs.
|Fibrous bands providing internal support within the spleen.
|Spaces in the spleen where blood is exposed to macrophages for phagocytosis.