View of Ultrasound guided needle mark to trachea for unidentified

Trachea and bronchi histology: Video & Anatomy trachea Forms the beginning of lower respiratory passage Page 3 TRACHEA contd… • Begins in the neck as a continuation of larynx trachea The trachea is a D-shaped fibrocartilaginous respiratory organ It consists of 16-20 tracheal cartilages anterolaterally and a fibromuscular wall posteriorly

trachea The wall of the trachea consists of four layers: 1 Mucosal layer: Pseudostratified ciliated columnar epithelium (Respiratory