Name: Student #: Lab Assignment 14: Respiratory System,
Histology Guide, Chapter 17
1.
Using Slide
MH 110 Trachea and Esophagus , Slide
MH 136 Trachea , and Slide
MHS 222 Trachea
,
draw
and label
eight
structures relevant to the lab. (4.5 marks)
2.
Using Slide
MH 139 Lung
, and focusing on a bronchus, draw
and label
five
structures relevant to the
lab. (3 marks)
3.
Which structures form the air-blood barrier? (1.5 mark)
Endothelial cells, basement membrane, type I pneumocyte, and surfactant make up the air-blood barrier. 4.
Explain the transition of epithelium from respiratory bronchiole to alveolar duct. (1 mark)
It transitions from simple cuboidal epithelium in the respiratory bronchiole to simple squamous epithelium in the alveolar duct. Notes:
Please adhere to the guidelines explained in Histology 101
, which can be found under the Laboratory tab on our OWL site. Marks may be deducted if you do not read and follow these instructions.
