,Inside you will get:
➢ Updated 2 Version Exam + Study Guide
➢ True & False Questions
➢ Multiple Choice Questions and Answers
➢ Expert-Verified Explanations
Table of Contents
BIOD 331 MODULE 5 EXAM VERSION 1 ..................................................... 2
BIOD 331 MODULE 5 EXAM VERSION 2 ................................................... 32
BIOD 331 MODULE 5 EXAM STUDY GUIDE .............................................. 32
BIOD 331 MODULE 5 EXAM VERSION 1
### Question 1
Expiration is an active process, whereas inspiration is largely passive.
Answer: False
Verified Explanation:
Inspiration is primarily an active process requiring contraction of the diaphragm and
external intercostal muscles to expand the thoracic cavity, lowering intrathoracic
,pressure and drawing air into the lungs. Expiration, at rest, is typically passive and
occurs due to elastic recoil of the lungs and relaxation of inspiratory muscles. Expiratory
muscles (e.g., internal intercostals, abdominal muscles) are recruited to actively force
air out only during forced expiration, such as during vigorous exercise or certain
pathological states.
---
### Question 2
Both carbon dioxide and oxygen are able to bind with hemoglobin.
Answer: True
Verified Explanation:
Hemoglobin, the primary oxygen-carrying protein in red blood cells, binds oxygen (O₂)
at its heme group; it also binds carbon dioxide (CO₂) at a separate site—the globin
chains—forming carbaminohemoglobin. While O₂ binds reversibly for transport from
lungs to tissues, CO₂ binding facilitates its removal from tissues to lungs for exhalation.
---
### Question 3
The rate of perfusion must exceed the rate of ventilation in order to ensure
adequate oxygenation of the blood.
Answer: False
Verified Explanation:
Optimal gas exchange requires a balance between alveolar ventilation (airflow, V) and
pulmonary perfusion (blood flow, Q), known as the V/Q ratio. Adequate oxygenation is
achieved when ventilation and perfusion are well matched, ideally at a ratio of about
0.8. Excess perfusion relative to ventilation (V/Q <1) leads to hypoxemia due to poorly
, oxygenated blood, whereas excess ventilation over perfusion (V/Q >1) causes wasted
ventilation.
---
### Question 4
Because of its strategic location, the larynx can be characterized as the
"watchdog of the lungs."
Answer: True
Verified Explanation:
The larynx is anatomically situated at the opening to the lower respiratory tract and
serves as a critical defense mechanism against aspiration. Its reflex closure during
swallowing protects the airway; its sensitivity to irritants evokes coughing, thus
“watchdog” metaphorically underscores its role in airway protection.
---
### Question 5
Exercise, allergens, and emotion can all contribute to an asthma attack.
Answer: True
Verified Explanation:
Asthma is a hyperresponsive airway disorder wherein triggers such as physical exertion
(exercise-induced), inhaled allergens (allergic asthma), and psychological factors (stress
or strong emotion) can provoke bronchoconstriction, airway inflammation, and
symptom exacerbation in susceptible individuals.
---
➢ Updated 2 Version Exam + Study Guide
➢ True & False Questions
➢ Multiple Choice Questions and Answers
➢ Expert-Verified Explanations
Table of Contents
BIOD 331 MODULE 5 EXAM VERSION 1 ..................................................... 2
BIOD 331 MODULE 5 EXAM VERSION 2 ................................................... 32
BIOD 331 MODULE 5 EXAM STUDY GUIDE .............................................. 32
BIOD 331 MODULE 5 EXAM VERSION 1
### Question 1
Expiration is an active process, whereas inspiration is largely passive.
Answer: False
Verified Explanation:
Inspiration is primarily an active process requiring contraction of the diaphragm and
external intercostal muscles to expand the thoracic cavity, lowering intrathoracic
,pressure and drawing air into the lungs. Expiration, at rest, is typically passive and
occurs due to elastic recoil of the lungs and relaxation of inspiratory muscles. Expiratory
muscles (e.g., internal intercostals, abdominal muscles) are recruited to actively force
air out only during forced expiration, such as during vigorous exercise or certain
pathological states.
---
### Question 2
Both carbon dioxide and oxygen are able to bind with hemoglobin.
Answer: True
Verified Explanation:
Hemoglobin, the primary oxygen-carrying protein in red blood cells, binds oxygen (O₂)
at its heme group; it also binds carbon dioxide (CO₂) at a separate site—the globin
chains—forming carbaminohemoglobin. While O₂ binds reversibly for transport from
lungs to tissues, CO₂ binding facilitates its removal from tissues to lungs for exhalation.
---
### Question 3
The rate of perfusion must exceed the rate of ventilation in order to ensure
adequate oxygenation of the blood.
Answer: False
Verified Explanation:
Optimal gas exchange requires a balance between alveolar ventilation (airflow, V) and
pulmonary perfusion (blood flow, Q), known as the V/Q ratio. Adequate oxygenation is
achieved when ventilation and perfusion are well matched, ideally at a ratio of about
0.8. Excess perfusion relative to ventilation (V/Q <1) leads to hypoxemia due to poorly
, oxygenated blood, whereas excess ventilation over perfusion (V/Q >1) causes wasted
ventilation.
---
### Question 4
Because of its strategic location, the larynx can be characterized as the
"watchdog of the lungs."
Answer: True
Verified Explanation:
The larynx is anatomically situated at the opening to the lower respiratory tract and
serves as a critical defense mechanism against aspiration. Its reflex closure during
swallowing protects the airway; its sensitivity to irritants evokes coughing, thus
“watchdog” metaphorically underscores its role in airway protection.
---
### Question 5
Exercise, allergens, and emotion can all contribute to an asthma attack.
Answer: True
Verified Explanation:
Asthma is a hyperresponsive airway disorder wherein triggers such as physical exertion
(exercise-induced), inhaled allergens (allergic asthma), and psychological factors (stress
or strong emotion) can provoke bronchoconstriction, airway inflammation, and
symptom exacerbation in susceptible individuals.
---
