NURS 327 EXAM 3 ACTUAL EXAM 2026 | COMPLETE QUESTIONS AND CORRECT ANSWERS
| VERIFIED ANSWERS | NEWEST VERSION | BRAND NEW VERSION!
ventilation - (ANSWER)movement of air in and out of the lungs
perfusion - (ANSWER)the blood flow to tissues and organs
diffusion - (ANSWER)the spontaneous movement of gases, without the use of any energy or effort by
the body, between the alveoli and the capillaries in the lungs
upper airway structures - (ANSWER)nasopharynx, oropharynx, laryngopharynx
lower airway structures - (ANSWER)trachea, bronchi, bronchioles, larynx, bronchpulmonary segments
right lung - (ANSWER)has upper, middle, and lower lobe
left lung - (ANSWER)only has upper and lower lobe
role of cilia in the respiratory track - (ANSWER)line the trachea and bronchi, defend against
microorganisms, produces cough reflex
accessory muscles & when they're used - (ANSWER)- scalene, trapezius, pectorialis major,
sternocleidomastoid, internal intercostals, abd muscles
- used for labored breathing, when the diaphragm, lungs and intercostals are unable to provide
adequate ventilation
blood flow into, through, and out of heart - (ANSWER)- bronchial artery system: supplies oxygenated
blood to lungs and pleura
- pulmonary artery system: vast network of capillary that allows for gas exchange, pulmonary artery
trunk leaves RV with unoxygenated blood, pulmonary vein carries oxygenated blood back to heart
,NURS 327 EXAM 3 ACTUAL EXAM 2026 | COMPLETE QUESTIONS AND CORRECT ANSWERS
| VERIFIED ANSWERS | NEWEST VERSION | BRAND NEW VERSION!
ventilation control - (ANSWER)neaural: medulla oblongota, pons, referred to as respiratory center of
brain
perfusion control - (ANSWER)affected by gravity, and uneven distribution of body position, exercise, and
lung zones
factors that effect perfusion - (ANSWER)fluid volume within lung, fluid shifts, interstitial edema, alveolar
edema
ventilation-perfusion ratio (v/q ratio) - (ANSWER)- adequate volume of air matched with an adequate
blood flow
- normal: VA 4L/min air flow
Q 5L/min blood flow
VQ: 0.8
high v/q ratio - (ANSWER)- air ventilated but not perfused
- pulmonary embolus
low v/q ratio - (ANSWER)- perfused but not ventilated
- airway constriction
- responsive to O2 therapy
- asthma and pneumonia
v/q shunt - (ANSWER)- no ventilation
- not responsive to O2 due to alveolar collapse
- acute respiratory failure
, NURS 327 EXAM 3 ACTUAL EXAM 2026 | COMPLETE QUESTIONS AND CORRECT ANSWERS
| VERIFIED ANSWERS | NEWEST VERSION | BRAND NEW VERSION!
how does oxygen get from the environment to the tissues? - (ANSWER)it is ventilated into the
respiratory system and perfused through the body, oxygen diffuses out of alveoli into blood
what does the oxyhemoglobin curb represent? - (ANSWER)dscribes the relationship between PaO2 and
SaO2
methods of oxygen transport - (ANSWER)- dissolved in plasma (PaO2)
- bound to hemoglobin (SaO2) (4 receptors per molecule, affinity in lungs bind O2 and hemoglobin,
affinity in tissues releases O2 at site
shift to right of oxyhemoglobin curve - (ANSWER)- enhances O2 release to the tissues (ex: exercise)
- shifts in the curve result in the ability to pick up O2 in the lungs and release it in the tissues
hypoventilation - (ANSWER)- insufficient air delivery to alveoli to provide adequate O2 delivery and CO2
removal (too slow)
- causes: meds, pain, sleep apnea, paralysis
hyperventilation - (ANSWER)- increase in the amount of air entering the alveoli resulting in hypocapnia
(PaCO2<35)
- causes: hypoxia stimulation, anxiety, fear, fever, sepsis, brain stem injury
hypoxia - (ANSWER)- deficiency in the amount of oxygen reaching the tissues
- difficult to measure, assumed with PaO2/SaO2 are decreased, decrease in blood flow leads to a
decrease in O2 delivery
- use pulse oximetry to measure
hypoxemia - (ANSWER)- deficient blood oxygen as measure by PaO2
- measured by arterial blood gas tests
| VERIFIED ANSWERS | NEWEST VERSION | BRAND NEW VERSION!
ventilation - (ANSWER)movement of air in and out of the lungs
perfusion - (ANSWER)the blood flow to tissues and organs
diffusion - (ANSWER)the spontaneous movement of gases, without the use of any energy or effort by
the body, between the alveoli and the capillaries in the lungs
upper airway structures - (ANSWER)nasopharynx, oropharynx, laryngopharynx
lower airway structures - (ANSWER)trachea, bronchi, bronchioles, larynx, bronchpulmonary segments
right lung - (ANSWER)has upper, middle, and lower lobe
left lung - (ANSWER)only has upper and lower lobe
role of cilia in the respiratory track - (ANSWER)line the trachea and bronchi, defend against
microorganisms, produces cough reflex
accessory muscles & when they're used - (ANSWER)- scalene, trapezius, pectorialis major,
sternocleidomastoid, internal intercostals, abd muscles
- used for labored breathing, when the diaphragm, lungs and intercostals are unable to provide
adequate ventilation
blood flow into, through, and out of heart - (ANSWER)- bronchial artery system: supplies oxygenated
blood to lungs and pleura
- pulmonary artery system: vast network of capillary that allows for gas exchange, pulmonary artery
trunk leaves RV with unoxygenated blood, pulmonary vein carries oxygenated blood back to heart
,NURS 327 EXAM 3 ACTUAL EXAM 2026 | COMPLETE QUESTIONS AND CORRECT ANSWERS
| VERIFIED ANSWERS | NEWEST VERSION | BRAND NEW VERSION!
ventilation control - (ANSWER)neaural: medulla oblongota, pons, referred to as respiratory center of
brain
perfusion control - (ANSWER)affected by gravity, and uneven distribution of body position, exercise, and
lung zones
factors that effect perfusion - (ANSWER)fluid volume within lung, fluid shifts, interstitial edema, alveolar
edema
ventilation-perfusion ratio (v/q ratio) - (ANSWER)- adequate volume of air matched with an adequate
blood flow
- normal: VA 4L/min air flow
Q 5L/min blood flow
VQ: 0.8
high v/q ratio - (ANSWER)- air ventilated but not perfused
- pulmonary embolus
low v/q ratio - (ANSWER)- perfused but not ventilated
- airway constriction
- responsive to O2 therapy
- asthma and pneumonia
v/q shunt - (ANSWER)- no ventilation
- not responsive to O2 due to alveolar collapse
- acute respiratory failure
, NURS 327 EXAM 3 ACTUAL EXAM 2026 | COMPLETE QUESTIONS AND CORRECT ANSWERS
| VERIFIED ANSWERS | NEWEST VERSION | BRAND NEW VERSION!
how does oxygen get from the environment to the tissues? - (ANSWER)it is ventilated into the
respiratory system and perfused through the body, oxygen diffuses out of alveoli into blood
what does the oxyhemoglobin curb represent? - (ANSWER)dscribes the relationship between PaO2 and
SaO2
methods of oxygen transport - (ANSWER)- dissolved in plasma (PaO2)
- bound to hemoglobin (SaO2) (4 receptors per molecule, affinity in lungs bind O2 and hemoglobin,
affinity in tissues releases O2 at site
shift to right of oxyhemoglobin curve - (ANSWER)- enhances O2 release to the tissues (ex: exercise)
- shifts in the curve result in the ability to pick up O2 in the lungs and release it in the tissues
hypoventilation - (ANSWER)- insufficient air delivery to alveoli to provide adequate O2 delivery and CO2
removal (too slow)
- causes: meds, pain, sleep apnea, paralysis
hyperventilation - (ANSWER)- increase in the amount of air entering the alveoli resulting in hypocapnia
(PaCO2<35)
- causes: hypoxia stimulation, anxiety, fear, fever, sepsis, brain stem injury
hypoxia - (ANSWER)- deficiency in the amount of oxygen reaching the tissues
- difficult to measure, assumed with PaO2/SaO2 are decreased, decrease in blood flow leads to a
decrease in O2 delivery
- use pulse oximetry to measure
hypoxemia - (ANSWER)- deficient blood oxygen as measure by PaO2
- measured by arterial blood gas tests
