BIOD 331 | NURS 231 Pathophysiology
MODULE 5 EXAM
Actual Questions and Verified Answers
100% Guarantee Pass
Portage Learning, Geneva College
Inside you will get:
Updated Module 5 Exam
True & False Questions
Multiple Choice Questions and Answers
Expert-Verified Explanations
,### Ques on 1
Expira on is an ac ve process, whereas inspira on is largely passive.
Answer: False
Verified Explana on:
Inspira on is primarily an ac ve process requiring contrac on of the diaphragm
and external intercostal muscles to expand the thoracic cavity, lowering
intrathoracic pressure and drawing air into the lungs. Expira on, at rest, is
typically passive and occurs due to elas c recoil of the lungs and relaxa on of
inspiratory muscles. Expiratory muscles (e.g., internal intercostals, abdominal
muscles) are recruited to ac vely force air out only during forced expira on, such
as during vigorous exercise or certain pathological states.
---
### Ques on 2
Both carbon dioxide and oxygen are able to bind with hemoglobin.
Answer: True
Verified Explana on:
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 ssues, CO₂ binding facilitates its removal from ssues to
lungs for exhala on.
,---
### Ques on 3
The rate of perfusion must exceed the rate of ven la on in order to ensure
adequate oxygena on of the blood.
Answer: False
Verified Explana on:
Op mal gas exchange requires a balance between alveolar ven la on (airflow, V)
and pulmonary perfusion (blood flow, Q), known as the V/Q ra o. Adequate
oxygena on is achieved when ven la on and perfusion are well matched, ideally
at a ra o of about 0.8. Excess perfusion rela ve to ven la on (V/Q <1) leads to
hypoxemia due to poorly oxygenated blood, whereas excess ven la on over
perfusion (V/Q >1) causes wasted ven la on.
---
### Ques on 4
Because of its strategic loca on, the larynx can be characterized as the "watchdog
of the lungs."
Answer: True
Verified Explana on:
, The larynx is anatomically situated at the opening to the lower respiratory tract
and serves as a cri cal defense mechanism against aspira on. Its reflex closure
during swallowing protects the airway; its sensi vity to irritants evokes coughing,
thus “watchdog” metaphorically underscores its role in airway protec on.
---
### Ques on 5
Exercise, allergens, and emo on can all contribute to an asthma a?ack.
Answer: True
Verified Explana on:
Asthma is a hyperresponsive airway disorder wherein triggers such as physical
exer on (exercise-induced), inhaled allergens (allergic asthma), and psychological
factors (stress or strong emo on) can provoke bronchoconstric on, airway
inflamma on, and symptom exacerba on in suscep ble individuals.
---
### Ques on 6
Nearly all pulmonary emboli are thrombi arising from deep vein thrombosis in the
upper and lower extremi es.
Answer: False
Verified Explana on:
MODULE 5 EXAM
Actual Questions and Verified Answers
100% Guarantee Pass
Portage Learning, Geneva College
Inside you will get:
Updated Module 5 Exam
True & False Questions
Multiple Choice Questions and Answers
Expert-Verified Explanations
,### Ques on 1
Expira on is an ac ve process, whereas inspira on is largely passive.
Answer: False
Verified Explana on:
Inspira on is primarily an ac ve process requiring contrac on of the diaphragm
and external intercostal muscles to expand the thoracic cavity, lowering
intrathoracic pressure and drawing air into the lungs. Expira on, at rest, is
typically passive and occurs due to elas c recoil of the lungs and relaxa on of
inspiratory muscles. Expiratory muscles (e.g., internal intercostals, abdominal
muscles) are recruited to ac vely force air out only during forced expira on, such
as during vigorous exercise or certain pathological states.
---
### Ques on 2
Both carbon dioxide and oxygen are able to bind with hemoglobin.
Answer: True
Verified Explana on:
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 ssues, CO₂ binding facilitates its removal from ssues to
lungs for exhala on.
,---
### Ques on 3
The rate of perfusion must exceed the rate of ven la on in order to ensure
adequate oxygena on of the blood.
Answer: False
Verified Explana on:
Op mal gas exchange requires a balance between alveolar ven la on (airflow, V)
and pulmonary perfusion (blood flow, Q), known as the V/Q ra o. Adequate
oxygena on is achieved when ven la on and perfusion are well matched, ideally
at a ra o of about 0.8. Excess perfusion rela ve to ven la on (V/Q <1) leads to
hypoxemia due to poorly oxygenated blood, whereas excess ven la on over
perfusion (V/Q >1) causes wasted ven la on.
---
### Ques on 4
Because of its strategic loca on, the larynx can be characterized as the "watchdog
of the lungs."
Answer: True
Verified Explana on:
, The larynx is anatomically situated at the opening to the lower respiratory tract
and serves as a cri cal defense mechanism against aspira on. Its reflex closure
during swallowing protects the airway; its sensi vity to irritants evokes coughing,
thus “watchdog” metaphorically underscores its role in airway protec on.
---
### Ques on 5
Exercise, allergens, and emo on can all contribute to an asthma a?ack.
Answer: True
Verified Explana on:
Asthma is a hyperresponsive airway disorder wherein triggers such as physical
exer on (exercise-induced), inhaled allergens (allergic asthma), and psychological
factors (stress or strong emo on) can provoke bronchoconstric on, airway
inflamma on, and symptom exacerba on in suscep ble individuals.
---
### Ques on 6
Nearly all pulmonary emboli are thrombi arising from deep vein thrombosis in the
upper and lower extremi es.
Answer: False
Verified Explana on:
