hi:trachea [Trinipedia]

hi:trachea

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TRACHEA
- Synonyms
  - Rough air vessel ,
- Structural Features
  - Non collapsible
  - Cartilages
    - Presence of c shaped cartilaginous rings deficient posteriorly
    - Hyaline cartilage
  - Trachealis muscle
  - Annular ligament
  - Membranous wall
- Microscopic Features
  - mucous membrane
    - mucous epithelium
    - mucous glands
  - hyaline cartilage
  - Tracheal glands
- Dimensions
  - 10 to 15 cm long
- Situation
  - Upper half in neck
  - Lower half in superior mediastinum
- Parts
  - Cervical part
    - Begins at
    - Lower border of cricoid cartilage opposite C6 vertebra
  - Relations
    - Anterior
      - Isthmus of thyroid gland covering second and third tracheal rings
      - Inferior thyroid veins below isthmus
      - Fascia
      - Pretracheal fascia enclosing thyroid
      - Sternohyoid and sternothyroid muscles
      - Investing layer of deep cervical fascia
      - Skin and superficial fascia
    - Posterior
      - Oesophagus
      - Longus colli
      - Recurrent laryngeal nerve in tracheo oesophageal groove
    - Each side
      - Corresponding lobe of thyroid gland
      - Common carotid artery with in carotid sheath
  - Thoracic part
    - Follows curvature of spine , runs downards
    - Enters thorax in median plane
    - Tracheal bifurcation
    - Carina of trachea

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hi/trachea.txt
2023/06/19 09:25
brahmantra