Trachea
The trachea and primary bronchi, extrapulmonary components of the conducting portion of the respiratory system, cannot be distinguished from each other histologically. The trachea, continuing inferiorly from the larynx, lies anterior to the esophagus. The patency of these respiratory organs is maintained by C-shaped cartilage rings, whose openings face the esophagus. The two main lobes of the thyroid gland are located at the lateral boundaries of the trachea. 10x
Esophagus
The trachea and primary bronchi, extrapulmonary components of the conducting portion of the respiratory system, cannot be distinguished from each other histologically. The trachea, continuing inferiorly from the larynx, lies anterior to the esophagus. The patency of these respiratory organs is maintained by C-shaped cartilage rings, whose openings face the esophagus. The two main lobes of the thyroid gland are located at the lateral boundaries of the trachea. 10x
Trachea
The trachea and primary bronchi, extrapulmonary components of the conducting portion of the respiratory system, cannot be distinguished from each other histologically. The trachea, continuing inferiorly from the larynx, lies anterior to the esophagus. The patency of these respiratory organs is maintained by C-shaped cartilage rings, whose openings face the esophagus. The two main lobes of the thyroid gland are located at the lateral boundaries of the trachea. 10x
Primary bronchi
The trachea and primary bronchi, extrapulmonary components of the conducting portion of the respiratory system, cannot be distinguished from each other histologically. The trachea, continuing inferiorly from the larynx, lies anterior to the esophagus. The patency of these respiratory organs is maintained by C-shaped cartilage rings, whose openings face the esophagus. The two main lobes of the thyroid gland are located at the lateral boundaries of the trachea. 10x
Cartilage ring
The trachea and primary bronchi, extrapulmonary components of the conducting portion of the respiratory system, cannot be distinguished from each other histologically. The trachea, continuing inferiorly from the larynx, lies anterior to the esophagus. The patency of these respiratory organs is maintained by C-shaped cartilage rings, whose openings face the esophagus. The two main lobes of the thyroid gland are located at the lateral boundaries of the trachea. 10x
Cartilage ring opening
The trachea and primary bronchi, extrapulmonary components of the conducting portion of the respiratory system, cannot be distinguished from each other histologically. The trachea, continuing inferiorly from the larynx, lies anterior to the esophagus. The patency of these respiratory organs is maintained by C-shaped cartilage rings, whose openings face the esophagus. The two main lobes of the thyroid gland are located at the lateral boundaries of the trachea. 10x
Thyroid gland
The trachea and primary bronchi, extrapulmonary components of the conducting portion of the respiratory system, cannot be distinguished from each other histologically. The trachea, continuing inferiorly from the larynx, lies anterior to the esophagus. The patency of these respiratory organs is maintained by C-shaped cartilage rings, whose openings face the esophagus. The two main lobes of the thyroid gland are located at the lateral boundaries of the trachea. 10x
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Image credit
This image is from the University of Iowa slide collection.
