Anatomy 3 Respiratory System Part 2
There are _______ tertiary bronchi for each lung
10
The left lung has ______ lobes which means its has _____ secondary bronchi
2 and 2
The left lung has _________ and _________
2 lobes and 1 fissure
From the trachea to the alveolar ducts there are about ______ orders of branching
25
The diaphragm or phrenic has ____ openings
3
The right lung has _____ lobes which means it has ______ secondary bronchi
3 and 3
The right lung has _________ and ________
3 lobes and 2 fissures
The narrow, superior portion of the lung
Apex of the lung
Why is the right lung shorter and wider?
Because the liver is on that side
This layer of the primary bronchi contains incomplete rings of cartilage
Cartilaginous
Principle muscle of respiration. Dome shaped muscle situated between the thoracic and abdominal cavities
Diaphragm or phrenic
The IVC orifice allows the ________ to pass
IVC
The principal organs of respiration
Lungs
First portion of the bronchial tree. Right primary bronchus goes into the right lung. Left primary bronchus goes into the left lung
Right and left primary bronchi
Shorter and wider due to the fact that the diaphragm is higher on the right side.
Right lung
What is the function of the trachea?
Transports air into the right and left primary bronchi
The aortic orifice allows these four things to pass
aorta, thoracic duct, azygos vein, and hemiazygos vein
The broad, inferior surface of the lung that rests on the diaphragm
base of the lung
The tertiary bronchi divide into
bronchioles
Portion of the lung tissue that the tertiary bronchi supply
bronchopulmonary segment
A concave depression located medially on the left lung in which the heart lies
cardiac notch
The layers of the primary bronchi include
epithelia layer, fibro muscular, and cartilaginous.
This layer of the primary bronchi is pseudo stratified ciliated columnar epithelium
epithelial layer
The esophageal orifice allows these two things to pass
esophagus and vagus nerve
This layer of the primary bronchi has the trachealis muscle and elastic connective tissue to hold open the ends of the cartilage rings
fibro-muscular
Located on the medial surface of each lung is a slight indentation called the
hilum or hilus
The two fissures in the right lung are the
horizontal and oblique
The three orifices of the phrenic are
ivc, esophagus and aortic
The aortic orifice is located
lowest at t12
The IVC orifice is located
most anterior on T8
The fissure on the left lung is the
oblique fissure
There is ______ secondary bronchi for each lobe of the lung
one
The esophagus orifice is located
right of the midline at level t10
Shorter, wider and more vertical than the left. As a result, aspirated objects are more likely to enter and lodge in here
right primary bronchus
Actual structures held together by the pleura and connective tissue
root of the lung
Once inside the lungs, each primary bronchus subdivides into
secondary or lobar bronchi
The two lobes on the left lung are the
superior and inferior lobe
The three lobes in the right lung are the
superior, middle and inferior
The bronchioles branch repeatedly and the smallest bronchioles branch into even smaller tubes called
terminal bronchioles
What is the function of the lungs?
to exchange respiratory gasses between the lungs and the blood via capillaries