NSG 211 Exam 4 Questions With Complete Solutions

Surfactant correct answer: Coats the inside layer of alveoli to reduce surface tension Visceral Pleura correct answer: Inner, medial layer Attached to lung parenchyma Parietal Pleura correct answer: Outer, lateral layer Will adhere the 2 layers for chest and lung expansion Residual Volume correct answer: Volume of air remaining in lungs after the max exhalation Vital Capacity correct answer: The maximal amount of air that can be moved in and out of lungs with breaths Can be altered by lung disease, size of thorax, amount of fluid in lungs Central (Primary Control) correct answer: Chemoreceptors in the brain stem-> —> elevated CO2, elevated H+ in the CSF Hypercapnia is a major stimulus for the healthy CNS respiratory center Peripheral (Secondary Control) correct answer: Chemoreceptors in carotid artery and aortic body —-> decreased oxygen concentration in blood is major stimulus Oxygen levels must be low (60 torr) for activation Sinusitis correct answer: Bacterial infection secondary to a cold or allergy that obstructs sinus drainage Cause: Strep, Staph, heamophilus Influenza Signs/Sx: Nasal congestion, HA, Low grade fever Laryngotracheobronchitis (Croup) correct answer: Viral infection usually affects children 1-2 years old Cause: parinfluenza virus and adreno virus Signs/Sx: URI (cough, fever, rhinitis)