The trachea is a mobile cartilaginous and membranous tube. It begins in the neck as a continuation of the larynx at the lower border of the cricoid cartilage at the level of the 6th cervical vertebra. It descends in the midline of the neck.

In the thorax, the trachea ends below at the carina by dividing into right and left principal bronchi at the level of the sternal angle (opposite the disc between the 4th and 5th thoracic vertebrae). During expiration, the bifurcation rises by about one vertebral level, and during deep inspiration may be lowered as far as the 6th thoracic vertebra.

Webster Dictionary Meaning

1. Trachea
- The windpipe. See Illust. of Lung.
- One of the respiratory tubes of insects and arachnids.
- One of the large cells in woody tissue which have spiral, annular, or other markings, and are connected longitudinally so as to form continuous ducts.
Share it:  Cite

More from this Section

  • Cancer of the Rectum
    Cancer (carcinoma) of the rectum is a common clinical finding that remains localized to ...
  • Neuropsychiatry
    Neuropsychiatry is a branch of medicine concerned with both neurology (the scientific ...
  • Visceral pleura
    Visceral pleura is continuous with parietal pleura at the hilum of each lung where structures ...
  • Brain Disorder
    Brain Disorder is the any abnormality in the brain that results in impaired functioning ...
  • Evidence-Based Practice
    Evidence-Based Practice refers to treatment guidelines that can be supported by quality ...