BIO 202L Lab 13 Worksheet- The Respiratory System

BIO 202L Lab 13 Worksheet- The Respiratory
System
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Pre-Lab Questions

1. Name two functions of the nasal cavity mucosa.
Warms and moistens air
2. Why is the trachea reinforced with cartilaginous rings?
To prevent a collapse and to keep the air passageway open
3. Describe the path a molecule of oxygen takes to get to body tissue, starting with the nares.
Pharynx, larynx, trachea, bronchi, bronchioles, alveoli, left ventricle, aorta, artery, arterioles,
and capillaries.
4. What is asthma?
Due to the spasms in the bronchi, asthma is a respiratory condition that makes it difficult for
a person with it to breath.

Experiment 1: Microscopic Anatomy of the Respiratory System

Table 1: Experimental Observations

Respiratory Image Description of Visible Structure(s)

Celia, goblet cells, columnar cells, a
Trachea basement membrane, and connective tissue
of lamina propria


Alveoli, alveolar sacs, bronchi, bronchioles,
Lung
and capillaries




Post-Lab Questions
1. Label the arrows in the slide images below.
A- Goblet cells
B- Basement membrane
C- Connective tissue of lamina propria
D- Cilia

, E- Blood vessel
F- Bronchi
G- Alveoli
H- Alveolar sac