Flashcards in Final Exam Deck (141)
What type of surface epithelium is present in the vestibule of the nasal cavity?
Keratinized stratified squamous
What are vibrissae?
Hairs of the nasal vestibule acting as a large particle filter
What acts as the medium particle filter?
Mucociliary apparatus (goblet and ciliated columnar cells)
What causes a stuffy nose?
Inflam--> incr blood volume and incr in size of lamina propria-->decr lumen size
What causes a runny nose?
Inflam--> incr blood volume--> incr oxygen that stimulates seromucus gland secretion
What are the 4 paranasal sinuses?
Ethmoid, sphenoid, frontal, and maxillary sinuses
How do the paranasal sinuses connect to the nasal cavity?
What is the epithelium of the paranasal sinuses?
What exactly is respiratory epithelium?
Ciliated pseudostratified columnar epithelium
What may be the cause of a sinus infection?
Combination of small ostia and swelling in the lamina propria--> blocked ostia
T/F: All three subdivisions of the pharynx have stratified squamous as the surface epithelium.
False: Oropharynx and Laryngopharynx-stratified squamous
Nasopharynx-respiratory w/ mucociliary clearance
Where are the pharyngeal tonsils located?
What tonsils are present in the oropharynx?
Palatine and Lingual tonsils
Is there muscularis mucosa present in the pharynx?
What is the pharyngobasilar fascia?
The submucosa of the pharynx
What is special about the muscularis externa in the pharynx?
All skeletal muscle
Reversed pattern (inner long. and outer circular)
What is the term for the adventitia of the pharynx?
What is the surface epithelium of the trachea?
What is the likely function of the brush cells?
What type of glands are present in the lamina propria of the trachea?
T/F: The muscularis mucosa is absent in the trachea.
The individual trachealis muscles represent the __ ___ of the trachea.
What 2 things allow for the airways to completely close in an asthma attack?
Lack of cartilage
Complete layer of smooth muscle
What glands are absent in the bronchioles?
What is the epithelium type of the bronchioles?
Ciliated columnar w/ some goblet and Clara cells
What are Clara cells?
secretory cells w/ short microvilli that produce enzymes and a surfactant-type material
What is the 1st region of respiratory portion of the respiratory system?
What epithelial type is present in the respiratory bronchioles therefore making gas exchange possible?
Simple squamous epithelium
What is the dominant cell type in the alveoli?
Type 1 pneumocyte