Definitions
This is the indention on the left lung where the heart sits.
What is the cardiac notch?
This is the most important muscle of inhalation.
What is the diaphragm?
These consist of two or more cup-shaped alveoli sharing a common opening to a lobule.
What is an alveolar sac?
These structures make up the upper respiratory system.
What are the nose, pharynx, and associated structures?
These structures make up the lower respiratory system.
What are the larynx, trachea, bronchi, and lungs?
This projection of inferior-most tracheal cartilage at point where trachea divides into L & R bronchi has sensitive receptors for triggering a cough reflex.
What is the carina?
This kind of muscle elevates the sternum.
What are sternocleidomastoids?
This instrument is used to measure volume of air exchanged during breathing.
What is a spirometer?
Septal, lateral, nasal, and alar cartilages all make up this.
What is the cartilaginous framework?
This allows the diameter of the trachea to change subtly during inhalation and exhalation.
What is the trachealis muscle?
This is the region where blood vessels, bronchi, lymph vessels, and nerves enter/exit the lung.
What is the hilum of the lung?
These are located in aortic and carotid bodies and respond to changes in blood.
What are peripheral chemoreceptors?
These remove dust/debris from alveolar spaces.
What are alveolar macrophages?
This is a vertical partition that divides the nasal cavity into left and right sides.
What is the nasal septum?
The segment of lung tissue that each tertiary bronchus supplies.
What is the bronchopulmonary segment?
This refers to prolonging, amplifying, or modifying a sound by vibration.
What is resonance?
Acidity, temperature, and BPG are all examples of this.
What are affinity factors?
The maximum amount of air that can be exhaled after maximal inhalation.
What is vital capacity?
This structure extends from the soft palate to the hyoid bone.
What is the oropharynx?
Each terminal bronchiole divides into these microscopic branches.
What are respiratory bronchioles?
This lowers surface tension of alveolar fluid.
What is surfactant?
What is 300 million?
The remaining air in the conduction zone that does not undergo gas exchange.
What is anatomic dead space?
These form shelves that subdivide each side of the nasal cavity into passageways.
What are the nasal conchae?
Also known as the adam's apple, this forms the anterior wall of the larynx, giving it a triangular shape.
What is thyroid cartilage?