2/20/23 Lecture: Basic Pulm Overview Flashcards
Normal intrapleural chest pressure
-5 cmH2O
How many lobes does the right lung have and what are their names
3; superior, middle, inferior
Name the connective tissue layers of the lungs
Visceral pleura, parietal pleura
Which lung lobe has more volume
Right lung
Name the collection of large arteries, veins, and airways in the mediastinum
Pulmonary hilum
Contraction of the diaphragm occurs when
We inspire and the diaphragm is shifted down
How much air is added upon deep inspiration?
4.5 L
What connections does the diaphragm have to the skeleton
Right and left domes are attached to the base of the thorax and xiphoid process, L spine bodies, and L1 spinous processes - the right dome extends more inferiorly than the left (lower)
What openings are present in the diaphragm from most anterior to least?
Caval aperture, esophageal aperture, and aortic aperture
Which nerves innervate the diaphragm
The phrenic nerves
What muscle group connects the top of the thorax to the C-spine
The scalene muscle groups
Contraction of the scalene muscle groups prevent
the thorax from being pulled down
The bulk of lung tissue is found
in the back of the lungs
Where is the best place to auscultate the lungs
in the back
What is the largest part of the airway
the trachea
How many segments does the right main stem/lobe have
10
How many segments does the left main stem/lobe have
8
The cricoid cartilage connects
the thyroid cartilage and trachea
The cricothyroid ligament connects
the cricoid cartilage and the thyroid cartilage
What is the functional gas exchange unit
the alveoli
What connects alveoli to each other
bronchioles
The conducting zone/airways describe
airways in which gas exchange does not occur
How many generations are present in the pulmonary system
0-23 (24?)
Define anatomical deadspace
Area filled with air, but gas exchange does not occur
