Straighterline BIO202L Lab 13 The Respiratory System Completed Worksheet with all lab
photos (Latest Version August 2024)
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be rejected.
Pre-lab Questions
1. Name two functions of the nasal cavity mucosa.
To trap dust from the inhaled air.
warming the inhaled air.
2. Why is the trachea reinforced with cartilaginous rings?
help prevent falling due to respiratory pressure changes.
3. Describe the path a molecule of oxygen takes to get to body tissue, starting with the nares.
Through the nasal openings (nares), oxygen enters the body and passes through the respiratory
tract, which is made up of the pharynx, trachea, bronchi, and bronchioles, before arriving at the
lungs' alveoli. Oxygen diffuses into the bloodstream in the alveoli and is carried to different body
tissues by red blood cells through the circulatory system.
4. What is asthma? Provide a definition in your own words below.
The inflammatory disease of the airways known as asthma causes wheezing and breathing
difficulties. Increased inflammation and muscle tension are the hallmarks of this illness, which
narrows the airways and exacerbates respiratory problems.
,Lab 13 The Respiratory System BIO202L
EXPERIMENT 1: MICROSCOPIC ANATOMY OF THE RESPIRATORY SYSTEM
Introduction Questions
1. Label the arrows in the slide images below.
A. goblet cells
B. basement membrane
C. connective tissue
D. cillia
E. blood vessels
F. bronchi
G. alveoli
H. alveolar sack
, Lab 13 The Respiratory System BIO202L
2. Why is mucus present in the trachea?
The trachea's mucus performs a number of vital tasks, including moistening the air, removing
foreign particles from it, and shielding the airways from infections and allergens.
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