2025 NEW AND COMPLETE BIO 250 Lab 13 The Respiratory System at
Straighterline
Student Name:
Access Code (located on the lid of your lab kit):
Lab Report Format Expectations
Utilize college level grammar and professional formaṄng when completing this worksheet.
Submissions without proper formaṄng, all required photos or sufficient responses will be
rejected.
Pre-lab Questions
1. Name two functions of the nasal cavity mucosa.
The two major functions of the nasal cavity mucosa consists of controlling moisture that
enters the nose and protecting the lungs from foreign objects.
2. Why is the trachea reinforced with cartilaginous rings?
The trachea is reinforced with cartilaginous rings in order to ensure protection for the airway.
3. Describe the path a molecule of oxygen takes to get to body tissue, starting with the
nares. The path a molecule of oxygen takes to get to body tissue, starts from the
nose. The air enters the nose then travels down through the pharynx then throughout
the trachea. The trachea is divided into 2 smaller tubes: the left and right bronchi. The
air travels into the lungs through these tubes. These tubes continue to divide into
multi small tubes which are called the nronchioles. The air keeps traveling through
bronchioles until meeting alveoli.
4. What is asthma? Provide a definition in your own words below.
Asthma is known to be a lung disease that may cause your airway to become narrow
and increase wheezing and chest tightness.
,Lab 13 The Respiratory BIO202
L
System
EXPERIMENT 1: MICROSCOPIC ANATOMY OF THE RESPIRATORY SYSTEM
Introduction Questions
1. Label the arrows in the slide images below.
A. Goblet Cell
B. Basement Membrane
C. Connective Tissue of Lamina Propria
D. Cilia
E. Bronchiole
F. Bronchi
G. Alveolar Sac
H. Alveoli
, Lab 13 The Respiratory BIO202
L
System
2. Why is mucus present in the trachea?
Mucus is present in the trachea to act as a lubricant, it also keeps allergens out of the lungs.
Straighterline
Student Name:
Access Code (located on the lid of your lab kit):
Lab Report Format Expectations
Utilize college level grammar and professional formaṄng when completing this worksheet.
Submissions without proper formaṄng, all required photos or sufficient responses will be
rejected.
Pre-lab Questions
1. Name two functions of the nasal cavity mucosa.
The two major functions of the nasal cavity mucosa consists of controlling moisture that
enters the nose and protecting the lungs from foreign objects.
2. Why is the trachea reinforced with cartilaginous rings?
The trachea is reinforced with cartilaginous rings in order to ensure protection for the airway.
3. Describe the path a molecule of oxygen takes to get to body tissue, starting with the
nares. The path a molecule of oxygen takes to get to body tissue, starts from the
nose. The air enters the nose then travels down through the pharynx then throughout
the trachea. The trachea is divided into 2 smaller tubes: the left and right bronchi. The
air travels into the lungs through these tubes. These tubes continue to divide into
multi small tubes which are called the nronchioles. The air keeps traveling through
bronchioles until meeting alveoli.
4. What is asthma? Provide a definition in your own words below.
Asthma is known to be a lung disease that may cause your airway to become narrow
and increase wheezing and chest tightness.
,Lab 13 The Respiratory BIO202
L
System
EXPERIMENT 1: MICROSCOPIC ANATOMY OF THE RESPIRATORY SYSTEM
Introduction Questions
1. Label the arrows in the slide images below.
A. Goblet Cell
B. Basement Membrane
C. Connective Tissue of Lamina Propria
D. Cilia
E. Bronchiole
F. Bronchi
G. Alveolar Sac
H. Alveoli
, Lab 13 The Respiratory BIO202
L
System
2. Why is mucus present in the trachea?
Mucus is present in the trachea to act as a lubricant, it also keeps allergens out of the lungs.
