Respiratory System

What is the main function of the respiratory portion?

gas exchange

What are the three anatomical components responsible for gas exchange?

respiratory bronchioles
alveolar sacs & ducts
alveoli

The respiratory epithelium is made of ________ epithelium.

psuedostratified columnar

The main cell types in respiratory epithelium are ...(3)

ciliated columnar cells
goblet cells
basal cells

The respiratory epithelium lines the ...(4)

nasal cavity
trachea
larynx
bronchi

In the respiratory epithelium, cells are held together by _______.

junctional complexes

The epiglottis and vocal folds are lined with _______.

stratified squamous epithelium

true or false
Alveoli are composed of reticular and elastic fibers.

true

true or false
The bronchioles are composed of hyaline cartilage.

false - bronchioles are smooth muscle
trachea & bronchi are cartilage

true or false
The trachealis muscle is found in the intrapulomary bronchi.

false - found in the trachea

Which component contains cartilage rings?

trachea & primary bronchi

Cartilage plates are found in ______.

intrapulmonary bronchi

true or false
Both bronchioles and terminal bronchioles have cilia.

false - terminal bronchioles do not

_______ cells function in protection from pollutants, prevent luminal adhesion, and regenerate epithelium.

Clara

Alveoli contain which three cell types?

dust cells
type I alveolar cells
type II alveolar cells

Dust cells may exocytose debris into _______.

connective tissue

true or false
Type I alveolar cells cover 95% of alveolar surface.

true

Which of the alveolar cells are amitotic?

type I alveolar cells

Type II cells are located at _______ junctions.

septal

Which alveolar cells regenerate type I & type II cells?

type II alveolar cells

At what anatomical component are goblet cells no longer present?

bronchioles

At what portion of the system are cilia no longer present?

respiratory portion

______ are pliable, but firm support with the trachealis.

cartilage rings