The tracheobronchial lymph nodes are
lymph nodes
A lymph node, or lymph gland, is a kidney-shaped organ of the lymphatic system and the adaptive immune system. A large number of lymph nodes are linked throughout the body by the lymphatic vessels. They are major sites of lymphocytes that inclu ...
that are located around the division of
trachea
The trachea, also known as the windpipe, is a Cartilage, cartilaginous tube that connects the larynx to the bronchi of the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs. The trachea extends ...
and main
bronchi
A bronchus is a passage or airway in the lower respiratory tract that conducts air into the lungs. The first or primary bronchi pronounced (BRAN-KAI) to branch from the trachea at the carina are the right main bronchus and the left main bronchus. ...
.
Structure
These lymph nodes form four main groups including
paratracheal, tracheobronchial, bronchopulmonary and pulmonary nodes.
# ''Paratracheal nodes'' are located on either side of the trachea.
# ''Tracheobronchial nodes'' can be divided into three nodes including left and right superior tracheobronchial nodes, and the inferior trachiobronchial node. The two superior tracheobronchial nodes are located on either side of trachea just before its bifurcation. The inferior tracheobronchial node is located just below the bifurcation in the angle between the two bronchi.
# ''Bronchopulmonary nodes'' situate in the
hilum of each lung.
# ''Pulmonary nodes'' are embedded the
lung
The lungs are the primary organs of the respiratory system in humans and most other animals, including some snails and a small number of fish. In mammals and most other vertebrates, two lungs are located near the backbone on either side of t ...
substance on the larger branches of the bronchi.
The ''afferents'' of the tracheobronchial glands drain the lungs and bronchi, the thoracic part of the trachea and the
heart
The heart is a muscular organ in most animals. This organ pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide t ...
; some of the efferents of the posterior mediastinal glands also end in this group.
Their ''efferent'' vessels ascend upon the trachea and unite with efferents of the internal mammary and anterior mediastinal glands to form the right and left
bronchomediastinal trunks.
References
External links
* - "Mediastinum: Tracheobronchial Lymph Nodes and the
Carina
Carina may refer to:
Places
Australia
* Carina, Queensland, a suburb in Brisbane
* Carina Heights, Queensland, a suburb in Brisbane
* Carina, Victoria, a locality in Mildura
Serbia
* Carina, Osečina, a village in the Kolubara District
...
"
* http://www.instantanatomy.net/thorax/vessels/lnodes.html
Lymphatics of the torso
{{Portal bar, Anatomy