Lungs and Respiration Flashcards
What are the two functional divisions of the respiratory system?
- Conducting portion
2. Respiratory portion
What are the 6 sections of the conducting portion of the respiratory system?
- Nasal Cavity
- Pharynx
- Larynx
- Trachea
- Bronchi
- Bronchioles
What are the 4 sections of the respiratory portion of the respiratory system?
- Respiratory bronchioles
- Alveolar ducts
- Alveolar sacs
- Alveoli
What shape is the trachea?
C-shaped
What is the trachea?
A rigid tube which conducts air from larynx to lungs
What level does the trachea extend between?
Start at level of vertebra C6 and descends to level of vertebra T4
Name 2 main features distinct to the right bronchi
- Secondary bronchus emerges before hilum
2. Three secondary bronchi to the three lobes
Name 2 main features distinct to the left bronchi
- Branches within the hilum
2. Two secondary bronchi to the two lobes
Name 2 differences between right and left bronchi, not including the 2 main distinctions
- Right has bigger diameter
2. Right is more vertical
Give the 7 levels of the bronchi from the bifurcation of the trachea to the alveoli
- Primary bronchus
- Lobar Bronchus
- Segmental bronchus
- Bronchioles
- Terminal bronchiole
- Respiratory bronchioles
- Alveolar Duct
- Alveoli
To which level in the bronchi does the passage for air passage descend to?
Respiratory bronchioles
At what level in the bronchi does the passage for gas exchange being?
Respiratory bronchioles
What is a bronchopulmonary segment of the lung?
A portion of the lung supplied by a tertiary bronchus
How can a single segment be surgically resected without affecting other segments?
Each segment has its own VAN so is functionally and anatomically discrete
Where does gaseous exchange occur in the lung?
Alveoli
What is asthma?
Causes spasm of smooth muscle in bronchial tree
What is auscultation?
Listening to internal songs of the body
What is percussion?
Tapping the surface of a body part to learn the condition of the parts underneath
What is segmentectomy?
Helps remove lung disease without removing excess normal lung
What is thoracocentesis?
Removal of fluid in pleural effusion from pleural space for diagnostic or therapeutic purposes
At what level does the lung end in the midclavicular line?
6th costal cartilage
At what level does the lung end in the midaxillary line?
8th costal cartilage
At what level does the pleural fluid end in the midclavicular line?
8th costal cartilage
At what level does the pleural fluid end in the midaxillary line?
10th costal cartilage
What are the three parts of the pharynx?
- Nasopharynx
- Oropharynx
- Laryngopharynx
What is the nasopharynx?
Lies posterior to nasal cavity above soft palate
What is found on the lateral wall of the nasopharynx?
Opening of the auditory tube
What is the oropharynx?
Oral part of the pharynx which lies posterior to the oral cavity
What levels does the oropharynx run between?
Soft palate to C3 vertebra
What are found on the lateral wall of the oropharynx?
Palatine tonsils
What levels does the laryngopharynx run between?
C3-C6
Which area of the pharynx has only a respiratory function?
Nasopharynx
At what level does the trachea bifurcate?
T4 vertebra
What are the three parts of the parietal pleura?
- Mediastinal pleura
- Costal pleura
- Diaphragmatic pleura
What are 4 main features of the right lung?
- Short and wide due to compression by liver
- Has 2 fissures - Oblique and transverse
- Has 3 lobes - Upper, middle and lower
- Has 2 bronchi, pulmonary artery and 2 pulmonary veins
What are 4 main features of the left lung?
- Long and narrow due to compression by heart
- Has 1 fissure - Oblique
- Has 2 lobes - Upper and lower
- Has 1 bronchus, pulmonary artery and 2 pulmonary veins
What is the most superior feature of the hilum in the right lung?
Eparterial bronchus
What is the most superior feature of the hilum in the left lung?
Pulmonary artery
What are the segments of each lung?
See diagram in Lung and Bronchial Tree lecture
What are the impressions found on the surface of each lung?
See diagram in Lung and Bronchial Tree lecture
What are the blood vessels found on the surface of each lung?
See diagram in Lung and Bronchial Tree lecture