Cough- Exam 2 Flashcards
T/F: Cough can be stimulated by upper or lower dz or strictly voluntary
TRUE
What are the protective mechanisms of the respiratory system?
Mucocilliary escalator- continuous ciliary motion starting at the level of the bronchioles
Cough refelx- remove secretions from the tracheobronchial tree proximal to the level of the segmental bronchi
What nerve is involved in the involuntary reflex of the cough?
Vagal nerve
Bronchoconstriction and cough are two separate reflexes
TRUE
T/F: Bronchoconstriction is a constant component of a cough
TRUE
What factors are involved in cough stimulation
Bronchoconstriction Excessive mucous production Deposition of inhaled particles Release of inflammatory mediator Exposure of hot/cold air Intramural or extramural pressure Sloughing of airway epithelium Enhanced epithelial permeabiity (pulmonary edema)
What cell lining is involved in upper respiratory tract?
Pseudostratified ciliated columnar epithelium
How long does it take for the airway epithelium to heal?
7 weeks
What cells are present in the terminal and respiratory bronchioles that helps clear the lungs?
Clara cells
What do clara cells secrete?
Source of surfactant
Metabolizes airborne toxins
What does surfactant do?
aids in maintaining patency of airway
What is a specific test that should be ran while performing a respiratory auscultation?
Rebreathing
What lung sounds are associated with pneumonia?
Increased lung sounds, crackles and wheezes
What lung sounds are associated with pleuropneumonia?
Ventral dull sound
What lung sounds are associated with pleural effusion?
Cardiac sound larger area than normal because of increased sound conduction
