HESI Complete Full Exam Questions and
Verified Correct Answers WKU
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,4 Primary Functions of Respiratory System - Answer: 1.
Exchange of O2 and CO2
2. Delivery of O2 to tissues
3. Elimination of CO2
4. Maintain ABB (acid base balance)
Respiration - Answer: Gas exchange between the
atmospheric air and the blood and between the blood and
cells of body
Ventilation - Answer: Movement of air in and out of
airways
Inspiration - Answer: active, diaphragm
contracts/flattens, thoracic cage expands, chest volume
increases, intrapulmonary pressure decreases, air moves
in to lungs
Expiration - Answer: passive, inspiratory muscles relax,
diaphragm rises and rib descend, lungs recoil,
intrapulmonary pressure increases, air flows out
Tidal Volume - Answer: The volume of air inhaled and
exhaled with each breath. May not vary even with severe
disease. NL = 500mL
,Residual Volume - Answer: The volume of air remaining in
the lungs after a maximum exhalation. May be increased
with obstructive disease. NL = 1200mL
Hallmark for Asthma - Answer: expiratory wheeze
Pulmonary Function Test - Answer: Assess respiratory
function and determine the extent of dysfunction, non
invasive
Pulmonary Perfusion - Answer: Blood flow the pulmonary
vasculature Vascular component of respiration.
Hypoxemia - Answer: Decrease is arterial oxygen tension
in the blood, measured by ABGs, PaO2 < 80
Hypoxia - Answer: Decrease in oxygen supply to the
tissues and cells
Signs are restlessness, SOB, confusion, tachypnea,
tachycardia, cyanosis
Lung Compliance - Answer: Measure of the force required
to expand or inflate the lungs, ability of lungs to expand
and recoil
, Elasticity/Recoil - Answer: Stretchability
Oxygen Hemoglobin Dissociation Curve - Answer:
Compares PaO2 with SaO2
If PaO2 decreases from 100 -> 80, hgb remain saturated
and hypoxia does not occur
PaO2 - Answer: Partial pressure of alveolar oxygen.
Indirect measure of O2 content in arterial blood. NL = 80 -
100
SaO2 - Answer: Oxygen saturation
Percentage of hemoglobin saturated with O2
PaO2 range for O2 deprivation - Answer: 50 - 60 mmHg
Normal O2 Saturation - Answer: 95 - 100%
Normal PaO2 - Answer: 80 - 100 mmHg
Main Functions of Upper Respiratory System - Answer:
Warm, filter, and humidify air.
Shift of O2 Hgb Dissociation Curve - Answer: Curve is
affected by CO2, H+ conc., temperature, and 2,3-DPG
Verified Correct Answers WKU
Premium Online Exam & Class Management Services
Professional • Confidential • Reliable • Results-Oriented
WHY STUDENTS CHOOSE US
Professional management of online classes
Support for proctored examinations
Assignment and coursework coordination
Quiz, test and assessment assistance
Fast communication and timely updates
Strict confidentiality and privacy
SERVICES OFFERED
✓ Online Class Management
✓ Proctored Exam Handling
✓ Weekly Discussion Participation
✓ Coursework Tracking
✓ Academic Scheduling Support
✓ Exam Preparation Guidance
,4 Primary Functions of Respiratory System - Answer: 1.
Exchange of O2 and CO2
2. Delivery of O2 to tissues
3. Elimination of CO2
4. Maintain ABB (acid base balance)
Respiration - Answer: Gas exchange between the
atmospheric air and the blood and between the blood and
cells of body
Ventilation - Answer: Movement of air in and out of
airways
Inspiration - Answer: active, diaphragm
contracts/flattens, thoracic cage expands, chest volume
increases, intrapulmonary pressure decreases, air moves
in to lungs
Expiration - Answer: passive, inspiratory muscles relax,
diaphragm rises and rib descend, lungs recoil,
intrapulmonary pressure increases, air flows out
Tidal Volume - Answer: The volume of air inhaled and
exhaled with each breath. May not vary even with severe
disease. NL = 500mL
,Residual Volume - Answer: The volume of air remaining in
the lungs after a maximum exhalation. May be increased
with obstructive disease. NL = 1200mL
Hallmark for Asthma - Answer: expiratory wheeze
Pulmonary Function Test - Answer: Assess respiratory
function and determine the extent of dysfunction, non
invasive
Pulmonary Perfusion - Answer: Blood flow the pulmonary
vasculature Vascular component of respiration.
Hypoxemia - Answer: Decrease is arterial oxygen tension
in the blood, measured by ABGs, PaO2 < 80
Hypoxia - Answer: Decrease in oxygen supply to the
tissues and cells
Signs are restlessness, SOB, confusion, tachypnea,
tachycardia, cyanosis
Lung Compliance - Answer: Measure of the force required
to expand or inflate the lungs, ability of lungs to expand
and recoil
, Elasticity/Recoil - Answer: Stretchability
Oxygen Hemoglobin Dissociation Curve - Answer:
Compares PaO2 with SaO2
If PaO2 decreases from 100 -> 80, hgb remain saturated
and hypoxia does not occur
PaO2 - Answer: Partial pressure of alveolar oxygen.
Indirect measure of O2 content in arterial blood. NL = 80 -
100
SaO2 - Answer: Oxygen saturation
Percentage of hemoglobin saturated with O2
PaO2 range for O2 deprivation - Answer: 50 - 60 mmHg
Normal O2 Saturation - Answer: 95 - 100%
Normal PaO2 - Answer: 80 - 100 mmHg
Main Functions of Upper Respiratory System - Answer:
Warm, filter, and humidify air.
Shift of O2 Hgb Dissociation Curve - Answer: Curve is
affected by CO2, H+ conc., temperature, and 2,3-DPG
