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Lab Exercise 5

Type 1 Pneumocyte main cell of lung
Type 2 Pneumocyte differentiate into Type 1, make surfactant, which adds phospholipids and lipoproteins for surface tension
What is the main function of the respiratory system? oxygenation of blood and elimination of O2
What are the two serious membranes surrounding each lung? visceral pleura and parietal pleura
What is inside the pleural cavity? pleural fluid
What is the function of pleural fluid? lubrication for lung movement
What makes up the bronchial tree? main branch, lobar branch, segmental branch, bronchioles, terminal bronchioles
How are bronchioles different from the other structures of the bronchial tree? More smooth muscle, less cartilage, smaller lumen
What makes up the conduction zone? Bronchial tree
What makes up the respiratory zone? Alveoli
What forms the respiratory membrane in the lung? simple squamous epithelium, basement membrane, interstitial fluid
Pulmonary ventillation breathing
Boyle's Law pressure and volume are inversely related
What muscles contract during quiet inspiration? diaphragm and external intercostal muscles
What muscles contract during deep inspiration? sternocleidomastoid and scalenes
What muscles contract during deep expiration? internal intercostals, internal and external obliques, transverse abdominus, rectus abdominus
Intrapulmonary/Intra-alveolar pressure pressure in alveoli; 0 relative to outside
Intrapleural pressure pressure in cavity
Intrapleural Pressure during inspiration decrease
Intrapleural pressure during expiration increase
What happens when the thoracic wall is punctured at least to the level of the pleural cavity? pneumothorax
Transpulmonary pressure difference between lung pressure and outside pressure
What happens to airway resistance when bronchioles constrict? increases
Mathematical relationship between air flow and resistance inverse
Effects of parasympathetic stimulation (Ach) bronchiole constriction
Effects of histamine application bronchiole constriction
Effects of sympathetic stimulation (Epi) bronchiole dilation
Lung Compliance ease of lung expansion
2 Factors on Lung Compliance stretchability of elastic fibers and surface tension
Respiratory Distress Syndrome infant doesn't have enough surfactant and alveoli and lungs collapse
Bronchial Sounds produced by air rushing through the apparatus
Vesicular breathing sounds sounds from air filling the alveolar sacs and sounds like rustling or a muffled breeze
Which sounds are heard in inhalation and exhalation? bronchial sounds
Which sounds are heard only in inhalation? Vesicular sounds
Created by: connorquinby
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