Respiratory System Flashcards
Pleura in the thoracic cavity
Parital pleura: costal rib surfaces (outer)
Visceral pleura: Encapsulates the lungs (inner)
The pleural cavity is lined with
mesothelium. Parietal external and visceral internal
Contents of the mediastinum
Heart, great vessels, trachea, esophagus
Lobes and fissures of the R and L lung
The R lung has 3 lobes (Superior, middle and inferior) divided by a horizontal and oblique fissure. Rests on the diaphragm.
The L lung has two lobes, a superior and inferior. Divided by an oblique fissure.
Pulmonary Ligament
Where parietal and visceral meet. Stabilize the lungs and prevent friction during expansion. Contains surfactant.
On the inner side of the R lung, there is a groove above the hilum for which vein?
Azygous vein. Goes above heart and drains into the superior vena cava.
On the inner side of the L lung, there is a fossa beside the hilum and groove above the hilum. What is the fossa and groove for?
Groove above the hilum is for the arch of aorta.
Fossa beside the hilum is occupied by the heart.
Pharynx 3 divisions from superior to inferior
- Nasopharynx
- Oropharynx
- Laryngopharynx
Structures of the Nasopharynx
Eustachian/auditory tube feeds into it
Part of the respiratory tract
Above soft palate and nearby tonsils
How does the tissue type change from the nasal cavity to nasopharynx to oropharynx.
Nasal cavity- Pseudostratified columnar with cilia
Nasopharynx- pseudo stratified columnar with cilia
Oropharynx- SSNK (Ciliated?)
What type of epithelial cells are found in the nasopharynx?
Pseudostratified with cilia
less likely- simple columnar ciliated
What type of epithelial cells are found in the nasal cavity?
Pseudostratified columnar ciliated
Laryngopharynx extends from the __ to the ___
The epiglottis to the cricoid
What type of cartilage makes the epiglottis and cricoid? (both apart of the laryngopharynx)
Epiglottis- elastic cartilage
Cricoid- Hyaline cartilage
What is the laryngopharynx function?
Organ of phonation (changes pitch)
Extends from epiglottis to cricoid
Common passageway for food and air. Ends as esophagus inferiorly.