Respiratory Tract and Defence Mechanisms Flashcards
1
Q
A totipotent stem cell can give rise to…?
A
The entire organism
2
Q
A pluripotent stem cell can give rise to…?
A
All tissue types
3
Q
A multipotent stem cell can give rise to…?
A
Groups of cell types
4
Q
What can’t a pluripotent stem cell give rise to?
A
Placental tissue
5
Q
What is the histology of respiratory epithelium?
A
Pseudostratified ciliated columnar* epithelium with goblet cells
*Becomes more cuboidal in the broncholes
6
Q
As you go down the respiratory tract, the Goblet cells decrease but another cell increases in number. What cell is it, and what do they do?
A
Clara cells
Secrete GAGs to protect the bronchiole lining
7
Q
What is a pneumocyte also known as?
A
Alveolar cell
8
Q
What is the role of a Type 2 Pneumocyte?
A
Secretes pulmonary surfactant to reduce surface tension within alveoli
