Pretracheal Fascia

Pretracheal Fascia

Question 1. Pretracheal fascia
Answer:

Pretracheal fascia Features:

• The posterior layer becomes thick and forms a suspensory ligament called Ligament Of Berry
• Pretracheal fascia supports the thyroid gland and prevents it from sinking
• Pretracheal fascia provides a slippery surface for free movements of trachea during swallowing

“Understanding the pretracheal fascia through FAQs: Composition, functions, and uses explained”

Pretracheal fascia Attachments:

• Superiorly
  • Hyoid bone in median plane
  • Oblique line thyroid cartilage
  • Cricoid cartilage
• Inferiorly
  • Encloses inferior thyroid veins
  • This passes behind branchiocephalic veins
  • Blends with the arch of aorta
• On each side
  • Fuses with carotid sheath

Pretracheal fascia Applied aspect:

• The thyroid gland and all thyroid swellings move with deglutition because the thyroid is attached to the larynx by the suspensory ligament of Berry
• Neck infections in front of it may bulge in the suprasternal area or extend down into the anterior mediastinum

“Importance of studying the pretracheal fascia for anatomy students: Questions explained”

Question 2. Ansa cervicalis
Answer:

• Ansa cervicalis is a thin nerve loop lying embedded in the anterior wall of the carotid sheath

Ansa cervicalis Formation:

• Ansa cervicalis is formed by
  • Superior root called descendens hypoglossi
    • Derived from first cervical nerve
    • C1 & C2 joins hypoglossal nerve to form it
    • Descends between internal carotid artery and common carotid artery
  • Inferior root
    • Derived from second and third cervical nerve
    • Descends and wind around the internal jugular vein and joins the superior root

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Ansa cervicalis Distribution:

• Superior root
  • Superior belly of omohyoid
• Inferior root
  • Sternohyoid, sternothyroid, inferior belly of omohyoid

“Common challenges in mastering pretracheal fascia notes effectively: FAQs provided”