Cardiovascular and respiratory histology

Question 1

What are the two main ways of dividing the respiratory system?

Answer 1

Conducting and respiratory

conducting moves air in and out, respiratory is gas exchange

Question 2

nasal cavity, larynx, pharynx, bronchi

What are some of the functions of the conducting portion of the respiratory system?

Answer 2

Vocalization (larynx), olfaction (nasal cavity)

Question 3

What is the type of epithelium commonly found in the nasal cavity, pharynx, trachea and bronchi?

Answer 3

Pseudostratified ciliated columnar epithelium

Question 4

What is the function of basal cells?

Answer 4

Stem cells that replace differentiated cells

found in the basal lamina, become differentiated over time

Question 5

What is the arrangement of the cilia in the microtubules?

Answer 5

2 central single tubules with 9 doublets around the peripherally

Question 6

What are the two layers found on top of the cilia?

Answer 6

Deeper serous fluid found adjacent to the cilia with a thicker mucus on top

Question 7

What is the mucocilliary escalator?

Answer 7

cilia found inside the conducting airways that beat the mucus up

Question 8

What kind of cells line the vestibule?

vestibule is the entrance at the nasal cavity (nares)

Answer 8

Lined by stratified squamous epithelium

Question 9

What are nasal conchae and turbinates made up of?

Answer 9

submucousal connective tissue and serous glands

serous glands add moisture