Flashcards in CVR Deck (11):
Bronchial Tree Anatomy
Trachea splits into bronchi. Right brochi is slightly larger. Bronchi are lined with same type of mucus as the rest of the respiratory tract.
Role= distribute air around the lungs
Alveoli exchange CO2 and O2
Lobe Anatomy Right Lung
Right lung= upper, middle and lower lobe. Divided by 2 fissures- oblique and horizontal
- upper lobe is the largest. Extends from the apex of lung to horizontal and oblique fissures.
- middle lobe is the smallest. Located between horizontal and oblique fissures.
- lower beneath the oblique fissure
Left Lobe Anatomy
Left lung is smaller and narrower. 2 loves divided by the oblique fissure.
Upper lobe is above the oblique fissure
Lower lobe is below the oblique fissure
What is a fissure?
Double fold of visceral pleura forming a lung lobe
Visceral= envelops the lung
Parietal= lines the inner chest wall
Pleural fluid lubricates the membranes
Mechanics of breathing
Diaphragm and external intercostal muscles contract.
When diaphragm contracts it flattens- pressing down on abdominal contents and lifting thoracic cavity
Increasing the volume within the thoracic cavity
Contraction of the external intercostal muscles lead to elevation of ribs and sternum
Increase in lung volume
Causing a decrease in pressure
Pressure outside lungs is larger compared to the inside
Air rushes into the lungs as gas molecules
Move from an area of high pressure to low pressure
Muscles of inspiration
Diaphragm is the main muscle of inspiration
External intercostal- elevate ribs
Accessory muscles of inspiration
Strenocleidmastoid elevates the sternum
Scalenes- elevate and fix the upper ribs
Mechanics of Breathing
Diaphragm and external l
General health management
MDT: OT, dietician, specialist nurses