Tracheea
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Transcript of Tracheea
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Trachea
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Trachea
aka windpipe 11 cm long, 2-2.5 cm in diameter Mobile cartilaginous & membranous
tube
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Trachea
Commences at the lower border of cricoid cartilage of larynx
Extends downward in the midline of neck In thorax, ends by dividing into 2 main
bronchi at level of disc between 4th and 5th thoracic vertebrae
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Relations in the neck
Anteriorly Skin, fascia, isthmus of thyroid gland,
inferior thyroid veins, jugular arch, thyroidea ima artery & left brachiocephalic vein
Posteriorly Right and Left recurrent laryngeal nerves,
esophagus & vertebral column
Laterally Lobes of thyroid gland, carotid sheath
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Function:
main conduit of air to and from the lungs
Connects larynx to bronchi
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Blood Supply
The blood supply of trachea is derived mainly from the inferior thyroid arteries
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Lymph Drainage
The lymph vessels drain into the pretracheal & paratracheal lymph nodes
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Nerve Supply
The nerve supply is from the vagi, the recurrent laryngeal nerves, & sympathetic trunks.
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Tracheomalacia
is a condition characterized by flaccidity of the tracheal support cartilage which leads to tracheal collapse especially when increased airflow is demanded.
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Tracheomegaly
A collapsed trachea, resulting from defects in the cartilage which makes the cartilage unable to support the trachea, results in a dry hacking cough.
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Tracheitis
Aka bacterial tracheitis Bacterial infection of trachea Producing airway obstruction
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tHank yOu!!!