Trachea - Insects

trachea The trachea and bronchial tree form a system of airways that allow the passage of air to the lungs to take place in gas exchange The trachea is about 10cm

trachea and the mesoderm-derived mesenchyme surrounding it The mucosal epithelium and the ducts of the tracheal glands contain different types of stem cells  trachea The trachea is a tube-shaped structure consisting of 15-20 D-shaped cartilage rings anterolaterally bridged by annular ligaments The trachealis muscle (smooth