BIOD 331 Pathophysiology Module 5 Exam Review Questions and 100%
Correct Answers 2026/27 Update – Portage Learning
Question 1
pts
The respiratory system can be divided into what 2 structures?
Your Answer:
1. Conducting airways: nasal passages, mouth and pharynx, larynx, trachea, bronchi and bronchioles
2. Respiratory tissues: the tissues in the lungs where gas exchange takes place
Conducting airways and respiratory tissues
Question 2
pts
What are the levels of branching?
Your Answer:
The mouth and nasal passages lead to the trachea which branches into the left and right bronchus.
These further branch into the bronchioles, the lobular bronchi, segmental bronchi, and finally terminal
bronchi containing alveoli
Trachea, bronchi, bronchioles, alveoli
Question 3
pts
Where is the site of gas exchange?
Your Answer:
BIOD 331 Pathophysiology Module 5 Exam
, The alveoli are the site of gas exchange within lung tissues.
Alveoli
Question 4
pts
What cells are in the alveolar epithelium?
Your Answer:
Type I alveolar: make up 95% of alveolar surface area, made up of squamous cells, unable to undergo
division
Type II alveolar: cuboidal cells covering 5% of alveolar surface area, synthesize surfactant, able to
undergo division into either Type I or II cells.
Macrophages: remove offending substances from alveoli
Type 1 and II alveolar cells, macrophages
Question 5
pts
Describe what happens during inspiration and expiration:
Your Answer:
During inspiration, air moves into the lungs due to the lower internal pressure within the lungs as
respiratory muscles expand the chest cavity.
During expiration, air moves out of the lungs due to the lower external pressure outside of the lungs as
there is more air inside the lungs than the thoracic cavity.
During inspiration, air is drawn into the lungs as the respiratory muscles expand the chest cavity.
During expiration, air moves out of the lungs as the chest muscles relax and the chest cavity
becomes smaller.
Question 6
pts
What occurs with the diaphragm during inspiration and expiration?
Your Answer:
The diaphragm is the main muscle of inspiration, as it when it contracts, the chest expands.
BIOD 331 Pathophysiology Module 5 Exam
Correct Answers 2026/27 Update – Portage Learning
Question 1
pts
The respiratory system can be divided into what 2 structures?
Your Answer:
1. Conducting airways: nasal passages, mouth and pharynx, larynx, trachea, bronchi and bronchioles
2. Respiratory tissues: the tissues in the lungs where gas exchange takes place
Conducting airways and respiratory tissues
Question 2
pts
What are the levels of branching?
Your Answer:
The mouth and nasal passages lead to the trachea which branches into the left and right bronchus.
These further branch into the bronchioles, the lobular bronchi, segmental bronchi, and finally terminal
bronchi containing alveoli
Trachea, bronchi, bronchioles, alveoli
Question 3
pts
Where is the site of gas exchange?
Your Answer:
BIOD 331 Pathophysiology Module 5 Exam
, The alveoli are the site of gas exchange within lung tissues.
Alveoli
Question 4
pts
What cells are in the alveolar epithelium?
Your Answer:
Type I alveolar: make up 95% of alveolar surface area, made up of squamous cells, unable to undergo
division
Type II alveolar: cuboidal cells covering 5% of alveolar surface area, synthesize surfactant, able to
undergo division into either Type I or II cells.
Macrophages: remove offending substances from alveoli
Type 1 and II alveolar cells, macrophages
Question 5
pts
Describe what happens during inspiration and expiration:
Your Answer:
During inspiration, air moves into the lungs due to the lower internal pressure within the lungs as
respiratory muscles expand the chest cavity.
During expiration, air moves out of the lungs due to the lower external pressure outside of the lungs as
there is more air inside the lungs than the thoracic cavity.
During inspiration, air is drawn into the lungs as the respiratory muscles expand the chest cavity.
During expiration, air moves out of the lungs as the chest muscles relax and the chest cavity
becomes smaller.
Question 6
pts
What occurs with the diaphragm during inspiration and expiration?
Your Answer:
The diaphragm is the main muscle of inspiration, as it when it contracts, the chest expands.
BIOD 331 Pathophysiology Module 5 Exam
