Respiratory Wet Room 6 - Histology Flashcards
What is the order - from the lumen to the outside of tube - of the layers of the extrapulmonary tubes (tubes outside of the lungs)
Mucosa Submucosa Cartilage Adventitia
What is the mucosa split into?
Epithelium and the lamina propria
What is the lamina propria?
A thin loose CT layer
What type of cartilage is found in the respiratory tract?
Hyelin
What CT fibre is predominant in the resp tract?
Elastin
What type of muscle is found in the resp tract?
Smooth
What type of epithelium is respiratory epithelium?
Pseudostratified, cillated, columnar
What are the small hair like structures projecting into lumen?
Cilla
Name the blank spaces
What do basal cells do?
Thought to be the source of replacement ciliated and goblet cells.
What is the name and function of the posterior strip if muscle in the trachea?
Trachealis muscle Constrict trachea to expel air forcefully - coughing Bridges the gap between hyeline rings
What layer are the secreting glands located and what are they called?
Submucosa Sero-mucous glands
What is the difference in the position of hyaline as you move from trachea to bronchi?
C shaped in trachea Hyeline plates in bronchi`
Is there cartilage in a bronchiole?
No
What are the terminal bronchioles?
The last conducting airway
