Chapter 1 Function and Structure Flashcards
What is the Upper Airway composed of?
Nose to Vocal Cords
What is the Lower Airway composed of?
Trachea to Alvelous
What two functions occur in nasal breathing?
Humidification and Filtering
Which bronchus usually gets foreign objects caught in it?
Right Lung; because its higher and has a less acute angle
Name the two types of pleural membranes and their function
Visceral, lines and envelopes the entirety of the lungs. Parietal, lines the diaphragm and the abdominal wall
What substance gets stuck in the interpleural space when a pneumothorax is present?
Air, usually caused by trauma or baro trauma
What substance is in a pleural effusion?
Fluid
All bronchioles contain Alveoli.
False; Terminal Bronchioles are where the bronchioles branch into respiratory bronchioles and do not have alveoli.
The nose to the terminal bronchioles can be defined as?
Conducting airways.
How large in the anatomic dead space in the lungs?
150mL
What is the barrier between alveoli and blood?
Type I alveolar epithelial cells and cover 93% of the surface
What composes 7% of the alveolar surface, but is also very important?
Type II cells
What two important functions do the type II cells have?
They secrete surfactant and they are progenitor cells for type I cells
How big is the pulmonary capillary bed?
70-80 m2
True or False? Accessory muscles for inspiration are only used when the WOB increases.
True.
