Histology Flashcards
What are the four main layers of walls of the conducting portion of the respiratory system?
Respiratory mucosa
Submucosa
Cartilage and/or muscle
Adventitia
What is the epithelium of the anterior nasal cavity?
Keratinized stratified squamous with vibrissae
What are the components of respiratory epithelium?
Pseudostratified ciliated columnar cells
Goblet cells
Brush cells
Small granule cells
Basal cells
What makes up the olfactory epithelium?
Pseudostratified columnar epithelium
Bipolar neurons
Support cells
Brush cells
Basal cells
What is another name for sustentacular cells?
Support cells
What is the function of brush cells?
General sensation
What is at the apical end of olfactory epithelial cells?
Nonmotile cilia
Layer of mucous
What is the lining of the nasopharynx?
Respiratory epithelium
What is the epithelium on the lingual surface of the epiglottis and on the vocal folds?
Stratified squamous non-keratinized epithelium
What is the core of the vocal cords consist of?
Skeletal muscle
Elastic fibers
What type of cartilage is found in the trachea?
Hyaline
What is a histological characteristic of bronchi?
Prominent spiral bands of smooth muscle with irregular cartilage
What are histological characteristics of the bronchioles?
Ciliated epithelium
Club cells
Elastic fibers
Smooth muscle
No goblet cells
No glands
No cartilage
What is the function of club cells?
Secrete surfactant like lipoprotein
What happens to epithelial cells in the bronchioles?
Starts as ciliated pseudostratified columnar and decreases in height to simple columnar then simple cuboidal
