NSC 232 EXAM 3 QUESTIONS AND
ANSWERS
What are therapeutic measures to promote respiratory function? - Answer- Medications,
Incentive spirometry, Chest physiotherapy, Postural drainage, Oxygen therapy, Artificial
airways, Airway suctioning.
What is the role of hemoglobin in oxygen transport? - Answer- 97% of oxygen combines
with hemoglobin in red blood cells and is carried to tissues as oxyhemoglobin.
How is carbon dioxide transported from tissues to the lungs? - Answer- 65% is carried
inside red blood cells as bicarbonate, and 30% combines with hemoglobin.
What is the significance of the ventilation-perfusion ratio? - Answer- It is crucial for
effective gas exchange, ensuring that air reaching the alveoli is matched with blood flow
in the pulmonary capillaries.
What is the purpose of incentive spirometry? - Answer- To encourage deep breathing
and improve lung function.
What is postural drainage? - Answer- A technique used to help clear mucus from the
lungs by positioning the patient to allow gravity to assist.
What are the main structures of the upper respiratory tract? - Answer- Mouth, Nose,
Pharynx, Larynx
What structures make up the lower respiratory tract? - Answer- Trachea, Bronchi,
Bronchioles, Alveoli, Pulmonary capillary network, Pleural membranes
What is the process of inspiration? - Answer- Air flows into the lungs as the diaphragm
and intercostals contract, increasing thoracic cavity size and lung volume, which
decreases intrapulmonary pressure.
What happens during expiration? - Answer- Air flows out of the lungs as the diaphragm
and intercostals relax, decreasing lung volume and increasing intrapulmonary pressure.
What is the primary function of the respiratory system? - Answer- Gas exchange
How does oxygen move during gas exchange? - Answer- Oxygen from inspired air
diffuses from alveoli into the blood in the pulmonary capillaries.
ANSWERS
What are therapeutic measures to promote respiratory function? - Answer- Medications,
Incentive spirometry, Chest physiotherapy, Postural drainage, Oxygen therapy, Artificial
airways, Airway suctioning.
What is the role of hemoglobin in oxygen transport? - Answer- 97% of oxygen combines
with hemoglobin in red blood cells and is carried to tissues as oxyhemoglobin.
How is carbon dioxide transported from tissues to the lungs? - Answer- 65% is carried
inside red blood cells as bicarbonate, and 30% combines with hemoglobin.
What is the significance of the ventilation-perfusion ratio? - Answer- It is crucial for
effective gas exchange, ensuring that air reaching the alveoli is matched with blood flow
in the pulmonary capillaries.
What is the purpose of incentive spirometry? - Answer- To encourage deep breathing
and improve lung function.
What is postural drainage? - Answer- A technique used to help clear mucus from the
lungs by positioning the patient to allow gravity to assist.
What are the main structures of the upper respiratory tract? - Answer- Mouth, Nose,
Pharynx, Larynx
What structures make up the lower respiratory tract? - Answer- Trachea, Bronchi,
Bronchioles, Alveoli, Pulmonary capillary network, Pleural membranes
What is the process of inspiration? - Answer- Air flows into the lungs as the diaphragm
and intercostals contract, increasing thoracic cavity size and lung volume, which
decreases intrapulmonary pressure.
What happens during expiration? - Answer- Air flows out of the lungs as the diaphragm
and intercostals relax, decreasing lung volume and increasing intrapulmonary pressure.
What is the primary function of the respiratory system? - Answer- Gas exchange
How does oxygen move during gas exchange? - Answer- Oxygen from inspired air
diffuses from alveoli into the blood in the pulmonary capillaries.
